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Artyom0805 [142]
3 years ago
8

What is the radius in feet of a circle that contains 78.5 square feet?

Mathematics
1 answer:
mylen [45]3 years ago
4 0
A=pr^2

r=(a/p)^(1/2)

r=(78.5)^(1/2) ft

r=5 ft (to the nearest one-hundredth)
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What is the arc length of arc CD in the circle below? Radius is 8ft and central angle is 35 degrees
ki77a [65]
This depends on the question itself. But I will assume and provide an answer.

If arc CD is made from the central angle intercepting the perimeter of the circle( so if the central angle is CBD, then the arc is from the two endpoints of the angle) that would mean that the arc is 35 degrees. If the two endpoints of the arc are NOT the two points from the angle that lie on the circle, then I cannot provide an answer without a picture.

To sum it up, if the arc begins and ends on the two endpoints of the angle, then it is 35 degrees. Unless it goes the long way around, then it would be 325, but that's unlikely to be the case. 
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algol [13]

Answer:

I think its 4.

Step-by-step explanation:

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One of the most fundamental truths of (Euclidean) geometry is that the ratio of the circumference to the diameter of any circle is a constant, and that constant is called pi (denoted by π π). Let C be the (length of the) circumference of a circle, and let d be its diameter. Then, we must have: C d = π C d = π

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Find the measure of the are or angle indicated. Assume that lines which appear tanget are tangents. ​
Brilliant_brown [7]

9514 1404 393

Answer:

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Step-by-step explanation:

1. Angle JKL is half the measure of the intercepted arc JK.

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2. The angle between tangents is the supplement of the intercepted arc.

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Step-by-step explanation:

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