Mensuration Practice Test 3

Question : 30 of 40

Marks: +1, -0

If the volumes of two right circular cones are in the ratio 4 : 1 and their diameters are in the ratio 5 : 4, then the ratio of their heights is:

Solution:

Volume of right circular cones =

1/3 πr^2 h

Ratio of diameters = 5 : 4
Volume of two right circular cones = 4 : 1

4(1/3πr^1 H): 1 (1/3 πr^2h)

4(1/3 π(5)^2H): 1(1/3 π(4)^2h)

4/3 π 25 H : 1/3 π 16h

100 H : 16 h

H/h

{16}/{100}

4/{25}

H : h
4 : 25

Go to Question:

Prev Question

Next Question