A frustrum of height 10cm is cut off from a cone of height 30cm. If the volume of the cone before cutting is 270cm³ ,...

A frustrum of height 10cm is cut off from a cone of height 30cm. If the volume of the cone before cutting is 270cm³ , find the volume of the frustrum.

---

---

Kavungya answered the question on March 27, 2019 at 13:10

Exams With Marking Schemes

• Grade 1
• Grade 2
• Grade 3
• Grade 4
• Grade 5
• Grade 6
• Grade 7
• Grade 8
• Grade 9
• PP1
• PP2
• Playgroup
• Form 1
• Form 2
• Form 3
• Form 4

Related Questions

---

• The last of three consecutive odd numbers is (2x+3). If their sum is 105, find the value of x. (Solved)
  

  The last of three consecutive odd numbers is (2x+3). If their sum is 105, find the value of x.

  Date posted: March 27, 2019 .    Answers (1)

• An Indian on landing at Wilson Airport changes Re 6000 into Kenya shillings when the exchange rate is Re = Ksh. 1.25. He spent Ksh.... (Solved)
  

  An Indian on landing at Wilson Airport changes Re 6000 into Kenya shillings when the exchange rate is Re = Ksh. 1.25. He spent Ksh. 5000 when in Kenya and converted the remaining amount to Rupees at the same rate as before. Find out how much the Indian is left with in Rupees.

  Date posted: March 27, 2019 .    Answers (1)

• How many multiples of 3 are there between 28 and 300 inclusive? (Solved)
  

  How many multiples of 3 are there between 28 and 300 inclusive?

  Date posted: March 27, 2019 .    Answers (1)

• Using the trapezium rule, estimate the area bounded by the curve y = x², the x – axis and the co-ordinates x = 2 and... (Solved)
  

  Using the trapezium rule, estimate the area bounded by the curve y = x², the x – axis and the co-ordinates x = 2 and x = 5 using six strips.

  Date posted: March 27, 2019 .    Answers (1)

• The value of a machine is shs. 415,000. The machine depreciates at a rate of 15% p.a. Find how many years it will take for... (Solved)
  

  The value of a machine is shs. 415,000. The machine depreciates at a rate of 15% p.a. Find how many years it will take for the value of the machine to be half of the original value.

  Date posted: March 27, 2019 .    Answers (1)

• Use tables to evaluate (Solved)
  

  Use tables to evaluate
  

  Date posted: March 27, 2019 .    Answers (1)

• Two matatus on a dual carriageway are moving towards a bus stop and are on level 5 km from the stop. One is travelling 20... (Solved)
  

  Two matatus on a dual carriageway are moving towards a bus stop and are on level 5 km from the stop. One is travelling 20 km/hr faster than the other, and arrives 30 seconds earlier. Calculate their speeds.

  Date posted: March 27, 2019 .    Answers (1)

• Two points A and B are 1000m apart on level ground, a fixed distance from the foot of a hill. If the angles of elevation... (Solved)
  

  Two points A and B are 1000m apart on level ground, a fixed distance from the foot of a hill. If the angles of elevation of the hill top from A and B are 60^o and 30^o respectively, find the height of the hill.

  Date posted: March 27, 2019 .    Answers (1)

• Use the table reciprocals to evaluate to 3 s.f. 1/7 + 3/12 + 7/0.103 (Solved)
  

  Use the table reciprocals to evaluate to 3 s.f.
  1/7 + 3/12 + 7/0.103

  Date posted: March 27, 2019 .    Answers (1)

• Three points are such that A (4 , 8), B(8,7), C (16, 5). Show that the three points are collinear. (Solved)
  

  Three points are such that A (4 , 8), B(8,7), C (16, 5). Show that the three points are collinear.

  Date posted: March 27, 2019 .    Answers (1)

• Rationalise the denominator in (Solved)
  

  Rationalise the denominator in
  

  Date posted: March 27, 2019 .    Answers (1)

• Expand (x + y)⁶ hence evaluate (1.02)⁶ to 3d.p. (Solved)
  

  Expand (x + y)⁶ hence evaluate (1.02)⁶ to 3d.p.

  Date posted: March 27, 2019 .    Answers (1)

• A man is employed at a KShs. 4000 salary and a 10% annual increment. Find the total amount of money received in the first five... (Solved)
  

  A man is employed at a KShs. 4000 salary and a 10% annual increment. Find the total amount of money received in the first five years

  Date posted: March 27, 2019 .    Answers (1)

• Without using tables, simplify (Solved)
  

  Without using tables, simplify
  

  Date posted: March 27, 2019 .    Answers (1)

• A train is moving towards a town with a velocity of 10 m/s. It gains speed and the velocity becomes 34 m/s after 10 minutes... (Solved)
  

  A train is moving towards a town with a velocity of 10 m/s. It gains speed and the velocity becomes 34 m/s after 10 minutes . Find its acceleration

  Date posted: March 27, 2019 .    Answers (1)

• An equation of a circle is given by x² + y² – 6x + 8y – 11 = 0 Find its centre and radius (Solved)
  

  An equation of a circle is given by x² + y² – 6x + 8y – 11 = 0
  Find its centre and radius

  Date posted: March 27, 2019 .    Answers (1)

• A regular octagon has sides of 8 cm. Calculate its area to 3 s.f. (Solved)
  

  A regular octagon has sides of 8 cm. Calculate its area to 3 s.f.

  Date posted: March 27, 2019 .    Answers (1)

• A metal rod, cylindrical in shape has a radius of 4 cm and length of 14 cm. It is melted down and recast into small... (Solved)
  

  A metal rod, cylindrical in shape has a radius of 4 cm and length of 14 cm. It is melted down and recast into small cubes of 2 cm length. Find how many such cubes are obtained

  Date posted: March 27, 2019 .    Answers (1)

• A rectangle measures 3.6 cm by 2.8 cm. Find the percentage error in calculating its perimeter. (Solved)
  

  A rectangle measures 3.6 cm by 2.8 cm. Find the percentage error in calculating its perimeter.

  Date posted: March 27, 2019 .    Answers (1)

• A quantity P varies inversely as Q² Given that P = 4 When Q = 2. , write the equation joining P and Q hence find... (Solved)
  

  A quantity P varies inversely as Q² Given that P = 4 When Q = 2. , write the equation joining P and Q
  hence find P when Q = 4

  Date posted: March 27, 2019 .    Answers (1)