The area of a circle A is 85π ft2. ∠BAC is a central angle of the circle, and m∠BAC = 36°

1 answer:

7 0

As stated the area of the circle is 85π ft2. The area of the sector BAC is a portion of this full circle area. the sector is made of 2 radii and arc that has rotated by 36°.
the magnitude of the central angle in the circle is 360°
Area for 360° central angle -  85π ft2
then the area for 1° =  85π ft2/360°
the area of 36° sector =  85π ft2/360° x 36°
=  8.5π ft2

You might be interested in

NEED HELP!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

e-lub [12.9K]

The formula for circumference = 2*Pi*r
R= radius. Radius is half of the diameter, and d= 20. This means that radius = 10. Now we have a full formula to work with.2*Pi*10.
Substitute 3.14 for pi.
3.14 * 10 = 31.4.
31.4*2 = 62.8.
62.8 rounded equals 63.
C = 63.

5 0

2 years ago

Solve for x: 6x – 8y = 12

Tcecarenko [31]

Hi there!

Since we have 2 variables in the given equation, and you only want to solve for one, the other will end up in your answer.

$6x + 8y = 12$