Question

The surface area of a sphere can be approximated as follows:

Answer 1

Answer:

588 m2

Step-by-step explanation:

APEX

Answer 2

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:

$Surface\ area = 4 \pi r^2$

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

$Surface\ Area = 4 \times 3 \times 7^2\\\\Surface\ Area = 4 \times 3 \times 49\\\\Surface\ Area = 12 \times 49\\\\Surface\ Area = 588$

Thus the surface area of a sphere  is 588 square meter