Question

chapter Surface Areas and volumes , help me in this question please​

Answer 1

Answer:

2200 cm^2

Step-by-step explanation:

Diameter of the base of lampshade, d = 20 cm

radius r = d/2 = 20/2 cm ;

height = 30 cm

Margin over the top and bottom = 2.5 cm + 2.5 cm = 5 cm

Hence total length of the cloth used

h = 30 cm + 5 cm

h = 35 cm

The cloth required for covering the lampshade = 2πrh = 2 X 22/7 × 10 × 35

= 2200 cm^2 Answer...

Answer 2

Answer:

hlo

kive ho.

ki krde ve tuc

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