If ratio of radius to height of a cylinder in 7 : 6 and curved surface area of…
2021
If ratio of radius to height of a cylinder in 7 : 6 and curved surface area of cylinder is 1056 cm2 , then find the total surface area of cylinder?
- A.
2218 cm²
- B.
2228 cm²
- C.
2248 cm²
- D.
2288 cm²
- E.
2268 cm²
Show answer & explanation
Correct answer: D
Let r:h = 7:6, so r = 7x and h = 6x. CSA = 2πrh = 264x² = 1056, so x = 2. TSA = 2πr(r+h) = 2288 cm².