Question

find the radius of a sphere whose surface area is 154cm2

Answer 1

Hii dear here is your answer hope it helps you!!


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Answer 2

Given :

• Surface area of Sphere = 154 cm²

To Find :

• Radius of Sphere = ?

Answer:

• The radius of Sphere is 3.5 cm.

Step-by-step explanation:

→ Surface Area of Sphere = 4πr²

→ 154 = 4 × 22/7 × r²

→ 154 × 7 = 4 × 22 × r²

→ 1078 = 88r²

→ r² = 1078/88

→ r² = √12.25

→ r = 3.5 cm

Therefore, the radius of the sphere is 3.5 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