A lampshade is a cylinder open at both ends, radius 10 cm and height 30 cm. A margin of 2.5 cm is added at the top and at the bottom for folding. How much cloth is needed? (Take π = 22/7.)

Question

Accepted Answer

2200 sq cm. Height of cloth = 30 + 2.5 + 2.5 = 35 cm. Cloth = 2 × 22/7 × 10 × 35 = 2200 sq cm. Ignoring the margins gives about 1886 sq cm.

A lampshade is a cylinder open at both ends, radius 10 cm and height 30 cm. A margin of 2.5 cm is added at the top and at the bottom for folding. How much cloth is needed? (Take π = $\frac{22}{7} .$ )

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More Class 8 Surface Area of a Cylinder practice

A lampshade is a cylinder open at both ends, radius 10 cm and height 30 cm. A margin of 2.5 cm is added at the top and at the bottom for folding. How much cloth is needed? (Take π = 722​.)

Step-by-Step Solution

Master this chapter in 30 minutes a day.

More Class 8 Surface Area of a Cylinder practice

A lampshade is a cylinder open at both ends, radius 10 cm and height 30 cm. A margin of 2.5 cm is added at the top and at the bottom for folding. How much cloth is needed? (Take π = $\frac{22}{7} .$ )