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# In figure below, you see the frame of a lampshade. It is to be covered with a decorative cloth. The frame has a base diameter of 20 cm and height of 30 cm. A margin of 2.5 cm is to be given for folding it over the top and bottom of the frame. Find how much cloth is required for covering the lampshade.

Given :
Height (h) of the frame of lampshade = (2.5 + 30 + 2.5) cm = 35cm
Radius (r) of the circular end of the frame of lampshade = $$\frac{20}{2}$$ m = 10 m

Now, Cloth required for covering the lampshade
= $$2{\pi}rh$$
= $$2 × \frac{22}{7} × 10 × 35$$ $${cm}^2$$
= (44 × 10 × 5) $${cm}^2$$
= 2200 $${cm}^2$$

Hence, for covering the lampshade, 2200 $${cm}^2$$ cloth will be required.