Question

Find the area of a circle with the diameter of 3 cm use 3.14 for pi

Answer 1

47.065

Explanation:

The formula for area of a circle is A = πr^2

Since the diameter is double the radius, divide 3 in half to get 1.5.

Then plug your numbers into the equation and remember to start with exponents.

3.14 x 1.5^2 or 3.14 x (1.5 x 1.5)

Answer 2

7.07 cm

Explanation:

Area of a circle = πr²

{diameter = 3 cm ; radius = 3/2 = 1.5 cm}

πr²

= 3.14 x (1.5)²

=3.14 x 2.25

= 7.07 cm (approx)