In the adjoining figure, you see …

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In the adjoining figure, 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. Chapter - 13 (13.2) question 10

Posted by Priya Rana 3 years, 10 months ago

CBSE > Class 09 > Mathematics

1 answers

Gaurav Seth 3 years, 10 months ago

In Fig. 13.12, 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.

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2r = 20 cm ⇒ r = 10 cm h = 30 cm
Cloth required = 2πr(h + 2.5 + 2.5)

= 2200 cm².

1Thank You

ANSWER

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CBSE > Class 09 > Mathematics