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21 votes
21 votes
Find the radius of the circle given the area of the sector is 153.9 and the angle measure

is 90 degrees.

Find the radius of the circle given the area of the sector is 153.9 and the angle-example-1
User Oscar F
by
2.1k points

1 Answer

17 votes
17 votes

Answer:

14

Explanation:

area of sector = 153.9

or, (1/2) r²∅ = 153.9

or, r²∅ = 153.9 ×2

or, r²∅ = 307.8

or, r²× π/2 = 307.8

or, r² = 615.6/π

or, r² = 196

or, r=√196

r = 14

User Cornstalks
by
2.6k points