asked 33.1k views
1 vote
Sixteen times the reciprocal of the number of inches in the circumference of a circle equals the number of inches in the diameter of the circle. What is the number of square inches in the area of the circle

asked
User Myxtic
by
7.6k points

1 Answer

5 votes

Answer:

4 square inches

Explanation:

The relation between diameter and circumference is ...

C = πd

The problem statement tells us of another relation:

16/C = d

Substituting for C using the above equation, we get ...

16/(πd) = d . . . . . substitute for C

16/π = d² . . . . . . . multiply by d

__

The area of a circle is given by the formula ...

A = πr²

Using r = d/2, this becomes ...

A = π(d/2)² = (π/4)d²

Using the above relation for d², the area of the circle of interest is ...

A = (π/4)(16/π) = 4

The area of the circle is 4 square inches.

answered
User Meawoppl
by
7.8k points

No related questions found

Welcome to Qamnty — a place to ask, share, and grow together. Join our community and get real answers from real people.