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;