Study resources on Kenyaplex

Get ready-made curriculum aligned revision materials

Exam papers, notes, holiday assignments and topical questions – all aligned to the Kenyan curriculum.

Or go directly to:

Class notes Holiday assignments Topical questions Other resources

A wooden drum closed at the top and bottom has a top radius of 28cm and bottom radius 21cm, its height is 90cm. The drum...

A wooden drum closed at the top and bottom has a top radius of 28cm and bottom radius 21cm, its height is 90cm. The drum is covered with leather excluding the top and bottom.

Calculate;
(a) The volume of the drum in litres
(b) The area of the leather covering the drum excluding the top and bottom.

Answers

sharon kalunda answered the question on August 9, 2019 at 15:32

Answer Attachments

Next: Find the number of sides of a regular polygon whose sum of interior angle is 2520⁰

Previous: A certain number of people were to contribute equally to buy books worth sh.1200 for a school library. Five people pulled out, so the others...

View more Mathematics Questions and Answers | Return to Questions Index

Exams With Marking Schemes

Related Questions

Find the number of sides of a regular polygon whose sum of interior angle is 2520⁰ (Solved)

Find the number of sides of a regular polygon whose sum of interior angle is 2520⁰

Date posted: August 9, 2019 . Answers (1)
The figure below represents a model of a house whose base ABCD is a square of sides 10cm. AE= 15cm and EV=13cm. a).(i) Draw the net... (Solved)

The figure below represents a model of a house whose base ABCD is a square of sides 10cm. AE= 15cm and EV=13cm.

a).(i) Draw the net of the model
(ii) Calculate the total surface area of the solids
(b) The cross section of a prism consists of a regular hexagon of side 4.8cm as shown in the figure below
(i) Find the area of the cross-section
(ii) If the prism is 15cm long, calculate its volume

Date posted: August 9, 2019 . Answers (1)
In the figure below QOT is a diameter and angle QTP = 48⁰, angle TQR = 76⁰ and angle SRT = 37⁰. Calculate giving reasons in each... (Solved)

In the figure below QOT is a diameter and angle QTP = 48⁰, angle TQR = 76⁰ and angle
SRT = 37⁰.

Calculate giving reasons in each case
(a) Angle RST
(b) Angle SUT
(c) Obtuse angle ROT
(d) Angle PST
(e) Reflex angle SOP

Date posted: August 9, 2019 . Answers (1)
The table below shows the masses of form four students of Tenwek high school. (a)State the model class (c) Using an assumed mean of 57, calculate... (Solved)

The table below shows the masses of form four students of Tenwek high school.

(a)State the model class
(c) Using an assumed mean of 57, calculate the
(i) Mean mass
(ii) The standard deviation
(d) Find the mass of the 50^th Student

Date posted: August 9, 2019 . Answers (1)
A straight road is northwards along the top of a vertical cliff of height 40m. A man at the top of the cliff spots a stationary... (Solved)

A straight road is northwards along the top of a vertical cliff of height 40m. A man at the top of the cliff spots a stationary boat on a bearing of 90⁰ from the foot of the cliff and at an angle of depression of 30⁰. He walks northwards and after one minute views the stationary boat on a bearing of 110⁰ from the foot of the cliff as he moves at a constant speed.
(a) Make a sketch to represent the position of the man and the boat.
(b) Calculate the distance of the boat from the foot of the cliff.
(c) Find the shortest distance from the position of the man to the stationary boat after 1 minute
(d) Calculate the speed of the man in meters per second.

Date posted: August 9, 2019 . Answers (1)
The ends of the roof of a workshop are segment of a circle of radius 10m. The roof is 20m long . The angle of... (Solved)

The ends of the roof of a workshop are segment of a circle of radius 10m. The roof is 20m long . The angle of the centre is 120⁰ as shown in the figure below

(a) Calculate:
(i) The area of one end of the roof.
(ii) The area of the curve surface of the roof.
(b) What would be cost to the nearest shilling of covering the two ends and the curved surface with galvanized iron sheet costing sh.80 per square meter.

Date posted: August 9, 2019 . Answers (1)
Draw the net of the solid below given that is a right pyramid and that AB = 4cm = BC = CD = AD and... (Solved)

Draw the net of the solid below given that is a right pyramid and that AB = 4cm = BC = CD = AD and BE= 6cm

Date posted: August 9, 2019 . Answers (1)
Solve for x in the equation 2 log x + log 5 = 1 + 3 log 2. (Solved)

Solve for x in the equation
2 log x + log 5 = 1 + 3 log 2.

Date posted: August 9, 2019 . Answers (1)
A sales woman earns a monthly wage of ksh. 3000 and gets a commission for the goods she sells. In a certain month she sells... (Solved)

A sales woman earns a monthly wage of ksh. 3000 and gets a commission for the goods she sells. In a certain month she sells goods worth ksh. 16,000 and her earning was ksh. 16,000 and her total earning was ksh.4,280.Determine the rate of the commission.

Date posted: August 9, 2019 . Answers (1)
Three towns A, B, and C are situated such that B is 50 km on a bearing of 150⁰ from town B (a) Draw a sketch... (Solved)

Three towns A, B, and C are situated such that B is 50 km on a bearing of 150⁰ from town B
(a) Draw a sketch showing the positions of towns A, B and C.
(b) Calculate;
(i) The size of Angle ABC
(ii)The distance of C and A

Date posted: August 9, 2019 . Answers (1)
The angle of elevation of the top of a tree from a point P is 22.6⁰. From another point Q which is 12m from the... (Solved)

The angle of elevation of the top of a tree from a point P is 22.6⁰. From another point Q which is 12m from the base of the tree, the angle of elevation of the top of the tree is 47.5⁰
(a) The height of the tree
(b) The distance between P and Q

Date posted: August 9, 2019 . Answers (1)
The length of a rectangle is increased by 25% while its width is decreased by 5%. Determine the percentage increase in the area of the... (Solved)

The length of a rectangle is increased by 25% while its width is decreased by 5%. Determine the percentage increase in the area of the rectangle.

Date posted: August 9, 2019 . Answers (1)
A straight line passing through the points P(4,5) also passes through the origin and makes an acute angle theta with the x – axis. Calculate... (Solved)

A straight line passing through the points P(4,5) also passes through the origin and makes an acute angle theta with the x – axis. Calculate to 2 decimal places the sizes of angle theta.

Date posted: August 9, 2019 . Answers (1)
The figure below shows a circle centre O and AOB is a sector of the circle and angle AOB = 72⁰ as shown. Given that the... (Solved)

The figure below shows a circle centre O and AOB is a sector of the circle and angle AOB = 72⁰ as shown. Given that the area of a sector AOB is 5pi cm², find the radius of the circle and hence calculate the area of the shaded part.

Date posted: August 9, 2019 . Answers (1)
Simplify the expression below (Solved)

Simplify the expression below

Date posted: August 9, 2019 . Answers (1)
Evaluate without using mathematical table or calculator. (Solved)

Evaluate without using mathematical table or calculator.

Date posted: August 9, 2019 . Answers (1)
Given the coordinates of P, Q and R as (2, -1), (3, 4) and (6, 2) respectively, (Solved)

Given the coordinates of P, Q and R as (2, -1), (3, 4) and (6, 2) respectively, find the coordinates
of P¹, Q¹ and R¹ the images of P, Q and R under a transformation represented by the matrix

Date posted: August 9, 2019 . Answers (1)
Point T is the midpoint of a straight line AB. Given that the position vectors of A and T are (Solved)

Point T is the midpoint of a straight line AB. Given that the position vectors of A and T are

Date posted: August 9, 2019 . Answers (1)
In the diagram below find the length of EC if BC = 12 cm. (Solved)

a) In the diagram below find the length of EC if BC = 12 cm.

(b) Given that the area of triangle DCE is 27 cm², find the area of ABECD.

Date posted: August 9, 2019 . Answers (1)
If each interior angle of a regular polygon is 150⁰, how many sides does the polygon have? (Solved)

If each interior angle of a regular polygon is 150⁰, how many sides does the polygon have?

Date posted: August 9, 2019 . Answers (1)