Question

find the radius and the diameter of a circle in cm whose area is 5400mm²​

Answer 1

Answer:

r = 41.4592979366 mm ; d = 82.9185958732 mm

Step-by-step explanation:

To find radius,

We know that πr² = A

Here, πr² = 5400 mm²

⇒ r² = $\frac{5400mm^{2}}{\pi }$

⇒ r = $\sqrt{\frac{5400mm^{2}}{\pi }}$

⇒ r = $\sqrt{1718.8733854}$

⇒ r = 41.4592979366 mm

Now, to find diameter,

We know that d = 2r

d = 2 × 41.4592979366

⇒ d = 82.9185958732 mm