The radius of a basketball is about 3.6 times greater than the radius of a tennis ball how many times greater is the volume of a basketball than a volume of a tennis ball

Volume of a sphere is 
Vbask=4/3 pi (rₐ)^3       where rₐ is the radius of a basketball
v tenn= 4/3 pi (rₓ)^3       where rₓ is the radius of the tennis ball
we know that rₐ=3.6 rₓ

vbasket/v tennis= 4/3pi (3.6 rₓ)^3= we see all is cancelled beside           
                                4/3 pi rₓ
3.6^3=46.65                 
the volume of the basketball is aprox 46.65 bigger than the volume of the tennis ball

You need to divide 210 square inches by 35 inches and that’s going to give you 6 inches and that’s the length of the hypothenuse of the right triangle i hope that this you : )