Question

Pls help me with these 4 questions.

Answer 1

Answer:

see below

Step-by-step explanation:

1. 7 1/2 ÷ 2 1/4 = 3 1/3 cm²

2. Volume of a cone = $\frac{1}{3}\pi r^2h = \frac{1}{3}\pi \times 4^2 \times5=\frac{80}{3} \pi$ 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 = $\frac{1}{3}\pi r^2h = \frac{1}{3} \times3.14 \times 10^2 \times16=\frac{5024}{3}$

  Cone Y volume = $\frac{1}{3}\pi r^2h = \frac{1}{3} \times3.14 \times 20^2 \times16=\frac{20096}{3}$

  Difference = 5024 ft³