Area of a rectangle and the area of a circle are equal. If the dimensions of the rectangle are 14cm × 11 cm. Find the radius of the circle .

Based on what i know about mean, this doesn't add up.

Three cylinders have a height of 8 cm. cylinder 1 has a radius of 1 cm. cylinder 2 has a radius of 2 cm. cylinder 3 has a radius of 3 cm. find the volume of each cylinder ( ! : ”0 )

Which best explains why this triangle is or is not a right triangle?