The radius of the sphere where the planes x + y + 3z = 15 and 3x + y + z = 1 are tangent to each other and its center is on the line y_2 / 2 = x_2 / 2 = z_4/3​

step-by-step explanation:

your answer is 228

step-by-step explanation:

add the top and bottom bases together, then divide them by 2, then multiply by the height.

(2,20) means that the 2 is 2 hours and 20 is 20$. so there both 20$ for 2 hours only the same price. like it says. so, the dunk tank and the bounce house are the same price (20$) for the same amount of time (2 hours).

hope i