Answer:
the length of FC = b = 12 cm
Step-by-step explanation:
The volume of prism is given along with height and height of triangular base. WE need to find the length of base.
V= B*h
where B= area of base = 1/2 * b *h
V= ( 1/2 *b * h) * h
900= 1/2 * b * 10 * 15
900 * 2 = b* 150
1800 = b* 150
=> b= 1800/150
b= 12 cm
So the length of FC = b = 12 cm
