Question

What is the lateral and surface area? ​

Answer 1

L = 324 cm²

S = 359.1 cm²

Explanation:

Lateral surface area of a triangular prism is given by,

Lateral surface area = Perimeter of the triangular base × Height

= (9 + 9 + 9)×12

= 27 × 12

= 324 cm²

Surface area area of the triangular prism = Lateral area of the prism + Area of the triangular bases

= 324 +
`(1)/(2)(Base)(Height)`

= 324 +
`(1)/(2)(9)(7.8)`

= 324 + 35.1

= 359.1 cm²