I'm having trouble with the surface area of the sphere. Like, here's a question I'm having trouble solving:
What is the approximate surface area of the sphere if it is 7 centimeters?
a. 615 cm^2
b. 539 cm^2
c. 154 cm^2
d. 84 cm^2
Please show all work and how you solvedi t. Please thank you!
if the radius is 7 cm, then the area is
4πr^2 = 4π*49 = 615.75 cm^2
Just use the formula to solve it. I'm also struggling too so don't feel bad. You ain't the only one
To find the surface area of a sphere, you can use the formula:
Surface Area = 4πr^2
Where:
- Surface Area is the total area of the exterior surface of the sphere
- π (pi) is a mathematical constant approximately equal to 3.14159
- r is the radius of the sphere
In this case, you are given the radius of the sphere as 7 centimeters. So, substituting r = 7 into the formula, we get:
Surface Area = 4π(7)^2
Now, let's calculate the value of the surface area approximately:
Surface Area = 4π(49)
Surface Area ≈ 4(3.14)(49)
Surface Area ≈ 615.44
Rounding the answer to the nearest whole number, the approximate surface area of the sphere is 615 cm^2.
Thus, the correct answer would be option a. 615 cm^2.