In the following exercises, approximate the(a) circumference and (b) a

Redemitz4s

Redemitz4s

Answered question

2021-11-13

In the following exercises, approximate the(a) circumference and (b) area of each circle. If measurements are given in fractions, leave a answer in fraction form.
diameter =56m
a) Approximate the circumference of circle with diameter 56m.
b) Approximate the area of circle with diameter 56m.

Answer & Explanation

tnie54

tnie54

Beginner2021-11-14Added 18 answers

a) Approximate the circumference of circle with diameter 56m.
Formula used:
Circumference of the circle
C=2πr.
Where r is the radius of the circle.
Calculation:
We are given diameter of the circle 56m.
Radius=12×Diameter=12×56=512m.
Substituting π=227 and r=512 in circumference formula C=2πr, we get
C2(227)(512)
On multiplying, we get
C5521m.
Conclusion: C5521m.
b) Approximate the area of circle with diameter 56m
Formula used:
Area of the circle
A=πr2
Where r is the radius of the circle.
Calculation:
Radius=12×Diameter=12×56=512m.
Substitute π=227 and r=56 in formula for area A=πr2, we get
A(227)(512)2
On multiplying, we get
A275504m2.
Conclusion: A275504m2

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