Earth's radius is approximately 6400 km. what is the surface area & volume of the earth?

Step-by-step explanation:

step 1

Find the surface area

we know that

the surface area of a sphere is equal to

substitute

substitute the approximate value of pi (3.14)

step 2

Find the volume

The volume is equal to

substitute

Volume V

Surface area

Step-by-step explanation:

Suppose that the shape of the earth is completely spherical.

Then the surface area and the volume of a sphere are given by the following formulas

Surface area

Volume V

In this case we know the radius r of the sphere.

then we use the radius value to find the volume and surface area

Volume V

Surface area

question:

could we have options?

$25

step-by-step explanation:

25 - 4.50 = 20.5

20.5 / 2 = 10.25

10.25 + 10 = 20.25

20.25 - 12.50 = 7.75

therefore the answer is $25 as shown as the first number.