Asteel water tank is a cylinder with a diameter of 30 ft and a height of 18 ft. how many square feet of steel were needed to make the tank?

give me the steps to doing this problem!

Given that abcd is a parallelogram solve for m

In a certain pentagon, the interior angles are a, b,c, d,e where a, b,c, d,e are integers strictly less than 180. ("strictly less than 180" means they are "less than and not equal to" 180.) if the median of the interior angles is 61 and there is only one mode, then what are the degree measures of all five angles?

Graph the equationy= x+3[tex]y = x + 3[/tex]