Question 65

The whole surface area of a pyramid whose base is a regular polygon is 340 cm2 and area of its base is 100 cm2 . Area of each lateral face is 30 cm2 . Then the number of lateral faces is

Solution

total surface area = lateral surface area + area of base

340 = lateral surface area + 100

lateral surface area = 240

Area of each lateral surface area = 30

No of faces = $$\frac{240}{30} = 8 $$

So, the answer would be option a )8

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