Question

How much metal sheets will be required to make a closed cylinder of height 1m and diameter 140 cm​

Answer 1

Answer:

7.43 meter square metal sheet is required

Step-by-step explanation:

height h=1 m

diameter = 140 cm

radius r= 0.7 m

Surface area of the cylinder

$2 \pi {r}^{2} + 2\pi \: rh \\ = 2\pi \times 0.7 ^{2} + 2\pi \times 0.7 \times 1 \\ = 0.98\pi + 1.4\pi \\ = 2.38 \times \pi \\ = 7.43m ^{2}$

7.43 meter square metal sheet is required

Answer 2

Step-by-step explanation:

here is your answer mate