Question:
The surface area of a sphere can be approximated as follows:
Surface area = 4πr2;
where r is the radius of the sphere;
π is a constant that is roughly equal to 3.
Calculate the surface area of a sphere with a radius of 7 meters using the simple approximation above.
Answer:
The surface area of a sphere is 588 square meter
Solution:
The surface area of a sphere is given as:
[tex]Surface\ area = 4 \pi r^2[/tex]
Where, "r" is the radius of sphere
π is a constant that is roughly equal to 3
From given,
Radius = 7 meter
Substitute r = 7 in given formula
[tex]Surface\ Area = 4 \times 3 \times 7^2\\\\Surface\ Area = 4 \times 3 \times 49\\\\Surface\ Area = 12 \times 49\\\\Surface\ Area = 588[/tex]
Thus the surface area of a sphere is 588 square meter
