154 sq. cm is the area of a circle
so find its radius

r = 7 cm

Step-by-step explanation:

The area (A) of a circle is calculated as

A = πr² ( where r is the radius )

Given A = 154 , then

πr² = 154 , that is

r² = 154 ( multiply both sides by 7 to clear the fraction )

22r² = 1078 ( divide both sides by 22 )

r² = 49 ( take square root of both sides )

r = = 7 cm

understand that i don't know the answers

will someone answer his question

c 1 hour

step-by-step explanation:

m = 2e

m = 2 so 2 = 2e

1 = e