find the radius and perimeter of a circle whose area is
77 cm²
Answers
Answered by
1
Answer:
441/2 RADIUS AND PERIMETER YOU FIND USING FORMULA
Step-by-step explanation:
Answered by
3
Answer:
Step-by-step explanation:
area of circle = 77 cm^2
=πr^2 = 77
= (22/7) x r^2 = 77
= r^2 = (77 x 7) / 22
= r^2 = 49/2
= r = 7/√2 cm
perimeter = 2πr = 2 x 22/7 x 7/√2
= 22√2 cm
Similar questions