1.

) How much metal sheet will be required to make a closed cylinder of height I m and diameter 140 cm?​

Answer»

Step-by-step explanation:

METAL sheet required to make CYLINDER = perimeter of cylinder.

Perimeter of cylinder =

2\pi \: r \: h

diameter = 140 cm

height = 1M = 100 cm

Perimeter =

2 \times  \frac{22}{7}  \times  \frac{140}{2}  \times 100

2 \times 22 \times 20 \times 50

= 44 \times 1000

= 44000 \: cm



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