Question

A

The net of a triangular prism is shown. The areas of the individual sides are
given in the table.

Answer 1

For finding surface area we will add them all.

Surface area

`\\ \rm\hookrightarrow A+B+C+D+E`

`\\ \rm\hookrightarrow 10+35+28+35+10`

`\\ \rm\hookrightarrow 118cm^2`

As we need LSA so let out A and E

• LSA=118-20=98cm^2

Answer 2

98 cm²

Explanation:

Lateral surface area = surface area of the sides ONLY of the object

⇒ lateral SA = B + C + D = 35 + 28 + 35 = 98 cm²