Question

PLEASE PLEASE HELP!!!
The figure below shows two white quarter circles inside a rectangle.



The area of the shaded portion is approximately _____square feet. Round the solution to the nearest whole number.

Answer 1

1800-450 pi

Answer 2

What about this one ??
An aquarium sells cubic fish tanks of different sizes. The length of the small-size fish tank is 2 feet. The dimensions of the jumbo-size fish tank are double the dimensions of the small-size fish tank. Which expression can be used to find the ratio of the volume of the small size-fish tank to the volume of the jumbo-size fish tank?

Answer 3

Answer to Question 1)
Area of rectangle = l*w
Area of Circle = pi*r^2

But we have to quarter circles which make up a semi-circle.
So the area of the circle in this problem is: (pi*r^2)/2

Rectangle = 30 * 60 = 1800
Circle = (pi * 30 * 30)/2 = 450pi = 1413.716

Rectangle - Circle = Shaded Area = 386.28

Answer to Question 2)
\[2^{3}/4^{3}\]

Answer 4

Answer 2 continued...\[(8/64)=(1/8)\]

Answer 5

Hope that helped.