Answer:
Thats good!
Step-by-step explanation:
Answer:
70910 (c)
Step-by-step explanation:
You move the decimal point to the right each time.
To solve this problem and calculate the area of the sphere, you must apply the following formulas:
Formula N° 1:
V=4/3(πr³)
V is the volume of the sphere (V=3,000π m³).
r is the radius.
Formula N° 2:
A=4πr²
A is the area of the sphere.
r is the radius.
As you can see, you don't have the value of the radius "r". So, you must rewrite the Formula N° 1, and clear "r":
V=4/3(πr³)
(3,000)(3)=4πr²
r³=9,000/4π
r=(9,000/4π)<span>^1/3
</span> r=13.1037 m
Then, to calculate the area of the sphere, you must substitute the value of "r" into the Formula N° 2:
A=4πr²
A=4π(13.1037)²
A=2,158 m²
<span>What is the surface area of the sphere to the nearest square meter?
</span>
The answer is: 2,158 m²
Step-by-step explanation:
Length = 18 3/4 feet = 75/4 feet = 225 inches
Size of each tile = 1 1/2 feet = 18 inches
Number of tiles needed
= length/size
= 225/18
= 25/2
=12.5 tiles
Natasha needs 12 and a half tiles.
