Answer:
322.28
A
Step-by-step explanation:
Area of the rectangle
L = 30
W = 21
Area = 30 * 21
Area = 630
Area of the circles
Radius = 7 m
Area = pi r^2
Area = 3.14 * 7^2
Area = 153.86 m^2
Area of both circles = 307.72
Area of the Shaded Region
Area of shaded region = area of the rectangle - area of 2 circles.
Area of Shaded Region = 630 - 307.72
Area of Shaded Region = 322.28
I assume by the length you mean height so,

≈ <span>4.54
.
if you're supposed to round it, it'd be either 4.50, or 5
</span>
I hope this helps
Number 4. will be a. because if you do 7*9=63*10=630.
Answer:
The diameter of pool a is 10.37 (34 × 0.305)
Pool B is greater
The circumference of pool B is greater
The area of pool B is 65.7221183130984ft
The area of pool a is
32.5783158177261ft
65.7221183130984 - 32.5783158177261=
Pool Bs area is 33.143802ft² bigger