Question

the volume of a cylinder 3 cm high and having bse area 8 sq. cm​

Answer 1

Step-by-step explanation:

The volume of the cylinder is given as πr

2

h where r= radius of the base of the cylinder and h is

the height of the cylinder.

The volume of the cylinder is given to us as 308 sq meter

∴

7

22

×r

2

×8=308

⇒r

2

=

22×8

308×7

=12.25

∴r=3.50 m

The lateral surface area of a cylinder is given by the formula =2πrh

=2×

7

22

×3.5×8

=176m

2

The total surface area of the cylinder = Lateral Surface Area + 2πr

2

=176+2

7

22

×(3.5)

2

=176+77

=253m

2