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how much leather will be used to make a ball with a diameter of 20 cm?​

Sagot :

QUESTION

How much leather will be used to make a ball with a diameter of 20 cm?

ANSWER

Use the formula for finding the area of a ball.

  • [tex] \tt A = \frac{π d²}{4}[/tex]

The symbol π is equivalent to 3.14. So,

  • [tex] \tt A = \frac{(3.14)(20 \: cm)²}{4} [/tex]

  • [tex] \tt A = \frac{1256 \:cm}{4}[/tex]

  • [tex] \tt A = 314 \:{cm}^{2} [/tex]

Therefore, there are 314 leather will be used to make a ball with a given diameter.