Question

What is the ratio of the sector area to the area of the entire circle?
Answer is: 1/5

Answer 1

A) 1/5

Explanation:

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Answer 2

1/5

Explanation:

Area of the sector = pi r^2 ( 72/360)

area of the circle = pi * r^2

divide these

Area of the sector = pi r^2 ( 72/360)

----------------------------------------------------

area of the circle = pi * r^2

cancel the pi and the r^2

Area of the sector ( 72/360)

----------------------------=

area of the circle

divide the top and bottom of the fraction by 72

Area of the sector

---------------------------- = 1/5

area of the circle