The diameter of a circle is 23m. Find its area to the nearest whole number
The radius of the circle is half of the diameter, which is:
23m / 2 = 11.5m
The area of the circle is given by the formula:
A = πr²
where π (pi) is a mathematical constant approximately equal to 3.14.
Substituting the radius, we get:
A = 3.14 x (11.5m)²
A = 3.14 x 132.25m²
A = 415.925m²
To the nearest whole number, the area is:
416m²