Q116
The radius of the base of a cylinder is 14 cm and its volume is 6160 cm3. The curved surface area (in cm2) is: ( = 227 )
The radius of the base of a cylinder is 14 cm and its volume is 6160 cm3. The curved surface area (in cm2) is:
A.
880
AnswerB.
940
C.
778
D.
660
Answer: Option A
Solution
Answer: Option A
Solution:
r = 14 cmπr2h = 6160 cm3
Curved surface area = ?
× 14 × 14 × h = 6160
h = 10
Curved surface area = 2πrh
= 2 × × 14 × 10
= 880 cm2