Question

information about the few cylinders is given below copy and complete the table radius 10 whole 1 upon 2 height 16 find curved surface find area of the base and whole surface​

Answer 1

Answer:

Area of curved area =2πrh

=2*22*5*16/7

=502.86( approx)

area of whole surface=2πrh+2πr^2

502.86 +2*22*5*5/7

502 + 157.15

659.15

Answer 2

To find : curved surface find area of the base and whole surface of cylinder

Explanation:

The table is not mentioned here ,

so ,

The formula used are

curved surface area of the cylinder = $2\pi r h$

base area = $\pi r^2$

Total surface are of the cylinder = $2\pi r h + \pi r^2 = 2\pi r (r+h)$

where r is the radius if the cylinder and h is the height of the cylinder

for example :

let the radius = 10 cm and height = 7 cm

then

curved surface area of the cylinder

$2\pi r h \\\\\ 2\times \frac{22}{7}\times 10 \times 7 \\\\440 cm ^2$

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