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Example 4, An aquarium is in the form of a cuboid whose external measures are80 cm x 30 cm x 40 cm. The base, side faces and back face are to be covered with acoloured paper. Find the area of the paper needed? |
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Answer» Dimension of aquariumLength l = 80 cm,Width b = 30 cmHeight h = 40 cm Area of paper to be covered= Area of base + 2*Area of side faces + Area of back= (l*b + 2*b*h + l*h)= (80*30 + 2*30*40 + 80*40)= (2400 + 2400 + 3200)= 8000 cm^2 |
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