Answer:
It is true.
Step-by-step explanation:
The equation for arc length is theta, in radians, multiplied by the radius. In the image, the angles in degrees are same. So, the angle in radians must also be same. So, multiplying both with radius will give the same value of arc length. They are congruent.
Answer:
4 inches should be turned up on both sides.
Step-by-step explanation:
In order to find this, create a situation in which we give the amount turned up on each side as x. Then give the amount that isn't turned up as 16 - 2x (since 2x is the amount turned up). Now we can find the area by multiplying the 3 measurements.
100 * x * (16 - 2x) = MAX
100 * (16x - 2x^2) = MAX
-200x^2 + 1600x = MAX
Now that we have a quadratic function, we can find the maximum value of x by using the vertex formula for x values (-b/2a).
x = -b/2a
x = -1600/2(-200)
x = -1600/-400
x = 4
128.72 should be the right answer