2 Answers

Dominic Barnes · Answer 1 · 2020-12-14T16:34:10+0000

Answer:

A = 15.2 mm²

Explanation:

The formula of an area of a circle:

$A_O=\pi r^2$

r - radius

We have the diameter d = 4.4 mm.

d = 2r ⇒ r = d : 2

$r=4.4:2=2.2\ mm$

Substitute:

$A_O=\pi(2.2^2)=4.84\pi\ mm^2$

$\pi\approx3.14\to A_O\approx(4.84)(3.14)=15.1976\ cm^2\approx15.2\ mm^2$

Chtioui Malek · Answer 2 · 2020-12-17T07:46:17+0000

Answer: Area of circle = 15.2 mm².

Explanation:

Since we have given that

Diameter of circle = 4.4 mm

Radius of circle =
$(4.4)/(2)=2.2\ mm$

As we know that

Area of circle is given by

$\pi r^2\\\\=3.14* 2.2* 2.2\\\\=15.19\ mm^2\approx 15.2\ mm^2$

Hence, Area of circle = 15.2 mm².