R=2.8 mm calculate the area of the circle

Why is it necessary for energy to move the way it does up the food pyramid. this is a science question by the way.

Common factor of 2xy2 and 4x2yz

If m DFC = 40° and m = 55°, then m =

Find the volume of a right circular cone that has a height of 11.1 in and a base with a circumference of 17.6 in. Round your answer to the nearest tenth of a cubic inch.

one day paul ran at a rate of 0.15 mile per minute for 40 minutes. the next day paul and Jen ran together at a rate of 0.16 mile per minute to 50 minutes. how far did paul run altogether

What is the answer to this question because i don't know9N-4=

3x-3=x-4 Can someone show me the steps for this?

7/6 - (1/4 + 1/3) = ?

A rectangular prism has the length of 11 centimeters, a width of 9 centimeters, and a height of 3 centimeters

Express using a radical 3 1/2