The perimeter of a quadrant of a circle is 71.4 cm find its area.
Its answer is 314 cm square.
I dont know how to solve it. I tried so many times
PLEASE SHOW WORKING
Answers
Answered by
9
A≈405.68cm²
C Circumference
71.4
cm
Using the formulas
A=πr2
C=2πr
Solving forA
A=C2
4π=71.42
4·π≈405.68277cm²
Answered by
0
Answer:
314cm2
Step-by-step explanation:
pi = 3.14
perimeter = r + r + 1/4 x pi x 2 x r
71.4 = 2r + 1.57r
r = 20
area= 1/4 x 3.14 x 20 x 20 = 324cm2
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