Aarav buys a football (a sphere) of radius 10.5 cm to gift his cousin in Pune. He wants to wrap it fully with a thin coloured paper. Ignoring overlaps, find the minimum area of paper needed (take π = 22/7).

Question

Accepted Answer

1386 cm^2. Paper needed = surface area = 4*π*r^2 = 4 * (22/7) * 10.5 * 10.5 = 4 * (22/7) * 110.25 = 1386 cm^2.

Aarav buys a football (a sphere) of radius 10.5 cm to gift his cousin in Pune.
He wants to wrap it fully with a thin coloured paper.
Ignoring overlaps, find the minimum area of paper needed (take π = 22/7).

Step-by-Step Solution

Master this chapter in 30 minutes a day.

More Class 9 Surface Area of a Sphere practice

Aarav buys a football (a sphere) of radius 10.5 cm to gift his cousin in Pune.He wants to wrap it fully with a thin coloured paper.Ignoring overlaps, find the minimum area of paper needed (take π = 22/7).

Step-by-Step Solution

Master this chapter in 30 minutes a day.

More Class 9 Surface Area of a Sphere practice

Aarav buys a football (a sphere) of radius 10.5 cm to gift his cousin in Pune.
He wants to wrap it fully with a thin coloured paper.
Ignoring overlaps, find the minimum area of paper needed (take π = 22/7).