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PLEASE HELP 30+ POINTS
Find the missing sector areas and arc lengths.

PLEASE HELP 30+ POINTS Find the missing sector areas and arc lengths.-example-1
User Lleims
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4.6k points

2 Answers

4 votes

Answer:

The Answer is on the picture

Explanation:

Hope this helps!!!

PLEASE HELP 30+ POINTS Find the missing sector areas and arc lengths.-example-1
User Binoy
by
4.8k points
5 votes

Answer:

see attached

Explanation:

The relevant formulas are ...

s = rθ . . . . . . arc length

a = (1/2)r²θ . . . . . . sector area

In each case, the angle θ is the central angle in radians.

__

Arc Length

From smallest to largest, the central angles (in degrees) of the yellow, purple, green, orange sectors are ...

30°, 50°, 100°, 180°

There are π radians in 180°, so in radians, these are ...

π/6, 5π/18, 5π/9, π

According to the formula for arc length, the arc lengths will be 6 ft times these values:

π ft, 5π/3 ft, 10π/3 ft, 6π ft . . . . arc lengths, smallest to largest

__

Area

For area, we need to multiply each of the angle values by ...

1/2r² 1/2·(6 ft)² = 18 ft²

Equivalently, we can multiply each of the arc lengths by 1/2·r = 3 ft.

Then the sector areas, smallest-to-largest, are ...

3π ft², 5π ft², 10π ft², 18π ft² . . . . sector areas, smallest to largest

PLEASE HELP 30+ POINTS Find the missing sector areas and arc lengths.-example-1
User Menefee
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5.1k points