Answer:
314 square cenntimeters
Step-by-step explanation:
Area of the circular cross-section of the pipe = πd²/4
Given that;
d = 20cm
Area = π(20)²/4
Area = 400π/4
Area = 100π
Area = 100(3.14)
Area = 314cm²
Hence the area of the circular cross-section of this pipe is 314 square cenntimeters
Answer:
C 29
Step-by-step explanation:
-3 1/3 * -8 7/10
we need to change each mixed number to an improper fraction
-3 1/3 = -(3*3+1)/3 = -10/3
-8 7/10 = -(10*8+7)/10 = -87/10
-3 1/3 * -8 7/10
-10/3 * -87/10
re write to make the math easier
-10/10 * -87/3
-1 *-29
29
Answer:
<u>Given</u>: base = 10.4ft, height = 12.5
Area of octagon = 8(1/2 × b × h)
- 8(1/2 × 10.4 × 12.5)
- 520ft²
Volume of pool = 520ft² × 3ft
Now, 1 cubic ft takes 7.5 gallons to fill.
Therefore, 1560 cubic ft takes,
So, <u>Correct choice</u> - [D] 11,700.