Question

Find the volume of a right circular cylinder, if the radius (r) of the base and the height (h) are :(i) r
= 7 cm, h = 15 cm (ii) r = 10.5 cm, h = 2 cm (iii) r = 2.8 m, h = 15 m (iv) r = 3.5 m, h = 1 m

Answer 1

Answer: So, final answer given question is ,

(1) Volume of cylinder is 2310 $cm^{3}$

(2) Volume of cylinder is 693 $cm^{3}$

(3) Volume of cylinder is 369.6 $cm^{3}$

(4) Volume of cylinder is 38.5 $cm^{3}$

Step-by-step explanation:

(1) given us ,  r

= 7 cm, h = 15 cm

Volume of cylinder = $\pi r^{2}$h

                                   = 22/7 × $7^{2}$ × 15

                                   = 2310 $cm^{3}$

(2) given us ,  r = 10.5 cm, h = 2 cm

Volume of cylinder = $\pi r^{2}$h

                                = 22/7 × $10.5^{2}$ × 2

                                = 693 $cm^{3}$

(3) given us , r = 2.8 m, h = 15 m

Volume of cylinder = $\pi r^{2}$h

                               = 22/7 × $2.8^{2}$ × 15

                                = 369.6 $cm^{3}$

(4) given us ,r = 3.5 m, h = 1 m

Volume of cylinder = $\pi r^{2}$h

                                 = 22/7 × $3.5^{2}$ × 1

                                  = 38.5 $cm^{3}$