Answer:
C
Step-by-step explanation:
The surface area (A) of a sphere is calculated as
A = 4πr² ← r is the radius, here r = 12, hence
A = 4π × 12²
= 4π × 144 = 576π units² → C
Answer
1 + 5 ÷ 5
This would equal 2, using BIDMAS.
The length of an arc can be related to the radius of circle and the angle it makes at the center of the circle by following equation:
s = rФ
Radius is given to be = 3960 miles
We are to find the arc length in feet, so we convert the miles to feet.
1 mile = 5280 feet.
So,
Radius = 3960 x 5280 feet = 20908800 feet
Angle = 1/60 degree
The angle must be in radians before, we use its value in the equation given above.
So, 1/60 degrees in radians will be:

Now we can use this value of angle in above equation to find the arc length.

So, rounded of to nearest 10 feet, the length of one nautical mile is 6080 feet.
He was trying to create a scene of happiness.
May I ask why you ut a lot of points.
Answer:
20 ft
Step-by-step explanation:
The tree's shadow is 34/8.5 = 4 times the length of the person's shadow, so the tree is 4 times a tall as the person:
4×5 ft = 20 ft . . . . . the height of the tree
_____
Shadow lengths are proportional to the height of the object casting the shadow.