Question

Find the curved surface area and the total surface area of the cylinder for which :
(i) h = 30 cm and r = 14 cm
(ii) h = 32 cm and r = 10.5 cm
(iii) h = 35 cm and r = 21 cm
(iv) h = 5 m and r = 35 cm​

Answer 1

Step-by-step explanation:

Curved surface area :

i) h = 30 cm, r = 14 cm

csa = 2πrh

=> 2 x 22/7 x 14 x 30

=> 2640

ii) h = 32 cm, r = 10.5 cm

csa = 2πrh

=> 2 x 22 / 7 x 10.5 x 32

=> 2112

iii) h = 35 cm, r = 21 cm

csa = 2πrh

=> 2 x 22 / 7 x 21 x 35

=> 4620

iv) h = 5 cm, r = 35 cm

csa = 2πrh

=> 2 x 22 / 7 x 35 x 5

=> 1100