It is known that the radius of the ball is RCM and the volume of the ball is 850cm3. According to the formula of the volume of the ball, V ball = 43 π R3, the value of R (accurate to 0.01) can be obtained

It is known that the radius of the ball is RCM and the volume of the ball is 850cm3. According to the formula of the volume of the ball, V ball = 43 π R3, the value of R (accurate to 0.01) can be obtained

∵r3=34π×850≈203，∴r=3203≈5.88cm．

The earth can be approximately regarded as a sphere. If V and R are used to represent the volume and radius of the sphere respectively, then v = 4 / 3 π r to the third power. The radius of the earth is about 6 times 10 to the third power. What is its volume?

V = the third power of four-thirds π R
=4/3*π*(6*10^3)^3
=4/3*π*216*10^9
=288π*10^9
=904320000000

The earth can be approximately regarded as a sphere. If V and R are used to represent the volume and radius of the sphere respectively, then v = 4 / 3 π R & # 179
The radius of the earth is about 6.37 × 10 cubic meters. Can you calculate the volume of the earth?

V=4πr³/3
=4×3.1416×（6.37×10^6）³/3
=1082.6994246464×10^18
About 1.08 × (the 21st power of 10) M & # 179;