Question

What is the area of a circle with a diameter of 36 milimeters? use 3.14 for pi

Answer 1

Answer:

1017.36 mm²

Step-by-step explanation:

d = 2r => r = d/2 = 36mm/2 = 18 mm

A = π·r²

= 3.14×(18mm)²

= 3.14×324mm²

= 1017.36 mm²

Answer 2

Answer:

1017.36mm²

Step-by-step explanation:

Since the diameter of that circle is 36mm, the radius would be equal to half the diameter

i.e. r =  $\frac{d}{2}$ (where d is the diameter of the circle)

r = $\frac{36}{2} mm$

r = 18mm

Area of a circle = $\pi$r² (where r is the radius of the circle)

Using 3.14 for $\pi$,

Area of the circle = (3.14 × 18²)mm²

                             = (3.14 × 18 × 18)mm²

                             = (3.14 × 324)mm²

                             = 1017.36mm²

Hope this helps :))