A right triangle is inscribed in a circle as shown. What is the area of the shaded region?
A. 5.04 square centimeters

B. 41.60 square centimeters

C. 77.32 square centimeters

D. 416.44 square centimeters

77.38 (almost answer C)

Step-by-step explanation:

The area of the circle is πr² = 36π ≈ 113.097

The side length of the "other" right side of the triangle is √(12²-9²) = √63

The area of the triangle is (9√63)/2 ≈ 35.717

So the shaded area is the difference, ie.: 113.097-35.717 = 77.38

b. 1.25 hr

step-by-step explanation:

if you have a constant speed of 60 mph, then you have a ratio between 60 mi. to 1 hr. dividing both sides by 60 we get the ratio

1 mi. to

then mult. both sides by 75 we get the ratio

75 mi. to

simplifying we get

75 mi. to

or 1.25 hr.