To find the volume of a cone you use the formula "1/3 x 3.14 x r^2 x h". Plug the formula into the problem. 1/3 x 3.14 x 3.75^2 x 3.5 =51.51. Rounded to the nearest tenth is 51.5. Hope this helps!
$417.50 should be the correct answer you just multiply the $7.25 to 30 and then add the $200.
10 + 15x + x + 10
= 16x + 20
