Question

Find H of the shape.

Answer 1

Two ways are there

1. Solve through volume
2. Solve through Pythagorean theorem

Make it simple, go through second way

• Base=18/2=9cm

`\\ \rm\Rrightarrow h^2=15^2-9^2`

`\\ \rm\Rrightarrow h^2=225-81`

`\\ \rm\Rrightarrow h^2=144`

`\\ \rm\Rrightarrow h=12cm`

Answer 2

Answer: 12

Step-by-step explanation: V of prism = S of triangle*Height of prism

height of prism is 30

S of triangle = a/2*h( a =18 cm)

3240=30*(18/2)*h

h=3240/(9*30)=12