Question

1. Find the volume of a cylinder whose (i) radius 7 cm, height 10 cm
2. diameter 7 cm , height 3 cm​

Answer 1

Answer:

1540cm2

Step-by-step explanation:

The radius of the cylinder is =7cm

The height of the cylinder is =10cm

The volume of the cylinder is =πr2h

= 22/7×7×7×10

=22×7×10

=1540cm2

Answer 2

Step-by-step explanation:

(i)Radius=7 m

Height=10 m

Now,

volume of a cylinder= πr²× h

                                   =22/7×7×7×10 cm

                                   =1540 cm₃                    

(ii)Diameter=7 cm

    Height=3 cm

Now,

volume of a cylinder=π(d/2)₂h

                                 =π.(7/2)₂.3

                                 =115.45 cm₃