Can someone help me with this? I will mark brainliest

C=diameter x pi

radius + radius = diameter

6+6=12

12 x 3.14 = 37.68

8 x 3.14 = 25.12

Radius x radius x pi = area

diameter / 2 = radius

8/2=4

4 x 4 = 16 x 3.14 = 50.24

6 x 6 = 36  x 3.14 = 113.04

6 km circle has  circum of 37.68 and area of 113.04

8 km circle has circum of 25.12 and area of 50.24

Hope this helps

Step-by-step explanation:

a. the are of the rectangle is 18.25

b. 18.25 times two is 36.50

rae me : d

i only know the sequence of arithmetic it adds the first is 5+4 then it goes up as it adds to then it is 9+5 then 14+6 then to 20+7 and so on. 5,9,14,20,27,35.

step-by-step explanation: