Question

How do I find the radius and area of a circle with a diameter of 26cm? thanks :D

Answer 1

Answer:

see below

Step-by-step explanation:

The radius is 1/2 of the diameter

r = d/2 = 26/2 = 13

The area is

A = pi r^2

A = pi (13)^2

A = 169pi cm^2

We can approximate pi by 3.14

A = 169(3.14) =530.66 cm^2

or by using the pi button

A = 169*530.9291585 cm^2

Answer 2

Answer:

$radius = 13cm \\ area = 530.66 {cm}^{2}$

Step-by-step explanation:

$d = 2r \\ 26 = 2r \\ \frac{26}{2} = \frac{2r}{2} \\ r = 13$

$area \\ =\pi {r}^{2} \\ = \pi \times 13 \times 13 \\ = 530.66 {cm}^{2}$

hope this helps

brainliest appreciated

good luck! have a nice day!