Answer:
2.5π
Step-by-step explanation:
First, let's find the circumference of the circle. The circumference is equal to dπ, or the diameter times π.
Knowing the diameter is 10, we can easily find that the circumference is 10π.
10π is the entire circumference, but we only need 90° of the circle. If the whole circle is 360°, then that means the portion we need is 90°/360°, which is 1/4.
1/4 times 10π is equal to 2.5π.
2.5π is the arc length.
Answer:
3.16
Step-by-stepp explanation:
The volume of a cylinder is given by the expression:
V = πr²h ----------*
314cm³ = 22/7 X r² X 10cm
314cm³ = 220/7 X r²
r² = 314 X 7 ÷ 220
r² = 2198 ÷ 220
r² = 9.99
r =√9.99
r = 3.16
Hence the radius of the cylinder is 3.16
Answer: (A) 72
Step-by-step explanation:
1. 12m x 2m = 24
2. 12m x 4m = 48
3. add both answers together 24m + 48m = 72
Answer:
9.8
Step-by-step explanation:
Step-by-step explanation:
$13.50-$1.50=12
-$1.50
12÷.60=
20 miles to airport