Question
The lateral surface (in cm²) of a right prism 16 cm
high standing on an isosceles triangle, each of whose equal sides is 12 cm and the other side is 16 cm, is:Solution
The dimensions of each base are:  a =12 cm b = 12 cm c = 16 cm The height of the triangular prism = 16 cm. Thus, the lateral area of triangular prism = (a + b + c ) h = (12 + 12 + 16) 16  = (40) x 16  = 640 cm²
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