Find the curved surface area and the total surface area of the cylinde

1.	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» 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

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»

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