Someone help with this problem and yeah

Each of the four sides of a swimming pool measures 9 meters. the pool is 5 meters deep. how much water will be needed to fill it completely? a. 45 cubic meters b. 81 cubic meters c. 225 cubic meters d. 405 cubic meters reset next

Which is the equation of a line perpendicular to the line with the equation 3x+4y=8

What is the value of x in the equation (2)3) (x+6)= -18 a. -36 b. -33 c. -24 d. -18