if the csa of sphere is 900π cm² find the radius please help
Answers
Answered by
12
Given :-
- Curved Surface Area of Sphere = 900π cm²
To Find :-
- Radius of Sphere = ?
Answer :-
- Radius of Sphere = 15 cm
Explaination :-
→ Curved Surface Area of Sphere = 4πr²
→ 900π = 4πr²
Substracting π from both sides we get :
→ r² = 900 ÷ 4
→ r² = 225
Taking square root to the both sides we get :
→ r = √225
→ r = 15 cm
Therefore,the radius of Sphere is 15 cm.
Extra Shots :-
- Volume of cylinder = πr²h
- T.S.A of cylinder = 2πrh + 2πr²
- Volume of cone = ⅓ πr²h
- C.S.A of cone = πrl
- T.S.A of cone = πrl + πr²
- Volume of cuboid = l × b × h
- C.S.A of cuboid = 2(l + b)h
- T.S.A of cuboid = 2(lb + bh + lh)
- C.S.A of cube = 4a²
- T.S.A of cube = 6a²
- Volume of cube = a³
- Volume of sphere = 4/3πr³
- Surface area of sphere = 4πr²
- Volume of hemisphere = ⅔ πr³
- C.S.A of hemisphere = 2πr²
- T.S.A of hemisphere = 3πr²
Answered by
31
if the csa of sphere is 900π cm² find the radius .
✦Csa of sphere is 900π cm²
Have to Find :-
Radius of the Sphere.
➹Curved Surface Area of Sphere = 4πr²
➹900π = 4πr²
Substracting π from both sides we get :
➹ r² = 900 ÷ 4
➹ r² = 225
➹ r = √225
➹ r = 15 cm
15cm
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Formulas required :-
Volume of cube = a³
Volume of sphere = 4/3πr³
Surface area of sphere = 4πr²
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