Prescribed 4579

The racing ball for men has a prescribed weight of 7250g. It is made of iron. How does its diameter change if we make it from lead? The density of iron is 7.8 g / cm cubic, and the density of lead is 11.3 t / m cubic.

Correct answer:

D1 =  12.1083 cm
D2 =  10.7009 cm

Step-by-step explanation:

m=7250 g ρ1=7.8 g/cm3 ρ2=11.3 g/cm3  V1=m/ρ1=7250/7.8=3936250929.4872 cm3  V = 4/3 π r3 = 4/3 π (D/2)3  = π/6 D3 D1=36 V1/π=36 929.4872/3.1416=12.1083 cm
V2=m/ρ2=7250/11.3641.5929 cm3 D2=36 V2/π=36 641.5929/3.1416=10.7009 cm

Did you find an error or inaccuracy? Feel free to write us. Thank you!

Tips for related online calculators
Our percentage calculator will help you quickly calculate various typical tasks with percentages.
Tip: Our volume units converter will help you convert volume units.
Tip: Our Density units converter will help you convert density units.

You need to know the following knowledge to solve this word math problem:

We encourage you to watch this tutorial video on this math problem: video1

Related math problems and questions: