If the radius and height of the cylinder are 91 m and 2.5 m, respectively, then what is the curved surface area and total surface areaa of the cylinder in respective manner? (Use = )
Show answer & explanation
Correct answer: B
Explanation
The correct answer is Option 2 i.e. 1430 m2 and 53482 m2.
T.S.A of cylinder = 2πr (h + r) , C.S.A of cylinder = 2πrh
where, h = height and r = radius
C.S.A of cylinder = 2πrh = 2 × 22/7 × 91 × 2.5 = 1430 m2
T.S.A of cylinder = 2πr (h + r) = 2 × 22/7 × 91(2.5 + 91) = 44/7 × 91 × 821.5 = 53482 m2