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

Monincbh

Monincbh

Answered question

2021-11-15

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.
radius =18.6m
a) Approximate the circumference of circle with radius 18.6m.
b) Approximate the area of circle with radius 18.6m.

Answer & Explanation

Lupe Kirkland

Lupe Kirkland

Beginner2021-11-16Added 21 answers

a) Formula used:
Circumference of the circle
C=2πr.
Where r is the radius of the circle.
Calculation:
We are given radius of the circle 18.6m.
Substituting π=3.14 and r=18.6 in circumference formula C=2πr, we get
C2(3.14)(18.6).
On multiplying, we get
C116.808m.
Conclusion:
C116.808m.
b) Formula used:
Circumference of the circle
C=2πr.
Where r is the radius of the circle.
Calculation:
Substitution π=3.14 and r=18.6 in formula for area A=πr2, we get
A(3.14)(18.6)2.
On simplifying exponent (18.6)2
A(3.14)(345.96)
On multiplying, we get
A1086.3144m2
Conclusion:
A1086.3144m2

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