4)

The formula for the area of a circle is A = ttr where A is the area and r is the radius.

Estimate the area of a circle where it = 3.142 and r = 8.6 cm.

The area of the circle = 27.0212cm^2

Step-by-step explanation:

The area for a circle is

A = πr^2

But weve been given the area of the circle in the information provided above

Area of a circle is given as

A = ttr

Where,

A - area of circle

r = radius of the circle

We've been the values of r and tt

r = 8.6cm

tt = 3.142

Inserting the values given into

A = ttr

A = 3.142 * 8.6

A = 27.0212cm^2

The area of the circle is 27.0212cm^2