Question

The diameter of a circle is 38 in. Find its area to the nearest whole number.

A =|
in²
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Answer 1

Area = 1134 in^2

Explanation:

Formula for the area of a circle:

The formula for the area of a circle is given by:

A = πr^2, where:

• A is the area in units squared,
• and r is the radius.

The radius is simply 1/2 the diameter (d):

r = 1/2d

Finding the radius:

Now, we can find the radius by halving :

r = 1/2(38)

r = 19

Thus, the radius is 19 inches.

Finding the area:

Now, we can find the area by substituting 19 for r in the formula for the area of a circle:

A = (π)(19)^2

A = (π)(361)

A = 1134.114948

A = 1134

Therefore, the area of the circle is about 1134 in^2