Vol of a cone = A frustum is made by removing a small cone from
a similar large cone.
1/3 trh
In the diagram shown, the height of the small cone
is a quarter of the height of the large cone.
Work out the volume of the frustum.
12 cm
6 cm

there are no short passages to look at

the image of (6, 9) under a dilation is (4, 6). the scale factor is

answer

d. 10

explanation

the distance from point y to wx is the height of the triangle.

using pythagoras theorem,

group similar terms to get,

this implies that,

take positive square root of both sides to get,

this implies that,

m∠5 + m∠3 = m∠1   is true.

m∠5 + m∠6 = 180 is true

m∠2 +m∠3 = m∠6   is true

m∠2 +m∠3 +m∠5 = 180   is true