Find the area of a circle whose circumference is 8 pi m

What is the volume of a rectangular prism if the length is 10.4 mm the width is 5 mm in the height is 8 mm

At the electronics store you have a coupon for 20% off up to 2 cds you buy for cds with the original cost of $10.99 each the sales tax is 5% what is the total cost of your purchase

Ron has 8 caps and 4 of his caps are blue. thes rest of his cap are red. how many of ron's caps are red