Question

In fig 13.12 ,you see the frame of a lampshade itvis to bevcovered with a decorative cloth .The frame has a base
diameter of. 20 cm and height of ,30cm. 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 Impshade.

Answer 1

Answer: 2200 cm^2

Step-by-step explanation:

Here,

r =(20/2) cm =10cm

h=30 +2×2.5 =35cm

Cloth required for covering the lampshade.

= Curved surface area

= 2πrh

= (2×22/7×10×35)cm^2

= 2200cm^2

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