What is the area of a right triangle 21 centimeters wide and 13 centimeters tall?

Why did the ice arena get so hot after the big game (this is math related google it to find the paper

The brain volumes (cm cubed) of 50 brains vary from a low of 904 cm cubed to a high of 1488 cm cubed. use the range rule of thumb to estimate the standard deviation s and compare the result to the exact standard deviation of 175.5 cm cubed, assuming the estimate is accurate if it is within 15 cm cubed

M.xyz =radians. covert this radian measure to its equivalent measure in degrees.