Question

WILL MARK AS BRAINLIEST IF ANSWERED CORRECTLY IN SIMPLEST FORM

Answer 1

hey mate

ur answer is in my attachment

Answer 2

Step-by-step explanation:

radius will be half of diameter

therefore

radius = 10 km

area will be πr2

that is

22 by 7 into 10 into 10

that is 2200 by 7

that is 314.28 km sqaure

mark as brainliest