Answer:
see below
Step-by-step explanation:
1. 7 1/2 ÷ 2 1/4 = 3 1/3 cm²
2. Volume of a cone = [tex]\frac{1}{3}\pi r^2h = \frac{1}{3}\pi \times 4^2 \times5=\frac{80}{3} \pi [/tex] in³
3. Volume of planter = 3 1/2 x 6 x 5 1/2 = 115.5
  4 planters = 115.5 x 4 = 462 cm³
4. Cone X volume = [tex]\frac{1}{3}\pi r^2h = \frac{1}{3} \times3.14 \times 10^2 \times16=\frac{5024}{3} [/tex]
 Cone Y volume = [tex]\frac{1}{3}\pi r^2h = \frac{1}{3} \times3.14 \times 20^2 \times16=\frac{20096}{3} [/tex]
 Difference = 5024 ft³ Â
