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dimensional shape. The surface area of prism is the sum of surface area of all faces. Flat faces of prism are

called lateral the faces and top, bottom faces is called base of prism. We express surface area by unit

square. We have three types of prism Rectangular prism, Circular prism and triangular based prism. Formula

for the surface area of prism = 2 (area of base) + perimeter of base * H

Step 1: From the problem we can write

Area of base = pi r^2 = 22/7 * 7^2 = 154 m^2

Perimeter of base = 2 pi r = 2 * 22/7 * 7 = 44 m

Step 2: We have the formula to find surface area of a circular prism

Surface area of circular prism = 2 (area of base) + perimeter of base * height

Step 3: we can plug the given values in this formula

Surface area of circular prism = 2 * 154 + 44 * 2

= 308 + 88

= 396 square m

height is 6m.

Step 1: From the problem we can write

a = 5 m, b = 4 m, h = 6 m.

Step 2: We have the formula to find surface area of a triangular prism

Surface area of a triangular prism = ab + 3bh

Step 3: we can plug the given values in this formula

Surface area of a triangular prism = 20 + 72

= 92 square m