Question

A circular plate has an area of 45.8 cm 2 work out the diameter of circle
ANSWER IT CORRECTLY PLEASE IT'S REQUEST

Answer 1

Answer:

Step-by-step explanation:

given

area of circular plate=45.8 $cm^{2}$

let us assume that the radius of the circular plate is r and the diameter is 2r.

we know that area of circle=$\pi r^{2}$

substituting values

45.8=$\pi r^{2}$

$\frac{22}{7}r^{2}=45.8$

cross multiplying

$r^{2}=\frac{45.8X7}{22}$

solving

$r^{2}=\frac{320.6}{22}=14.57$

r=$\sqrt{14.57}$

r=3.82 cm

therefore diameter is= 2X3.82=7.64 cm             answer