3 years ago

How can you use 10% and 20% of an amount to find 15% of anl amount?

1 answer:

3 0

You just need to know how much 10% is and then you just divided what 10% is and that will be equal to 5% and then you just add the 10 % and 5%

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Emily measures a prize wheel at a carnival and calculates that it has an area of 3.14 square feet. What is the prize wheel's cir

Marizza181 [45]

The circumference of wheel is 6.28 feet.

Step-by-step explanation:

Given,

Area of prize wheel = 3.14 square feet

Area = πr²

$3.14 = 3.14(r)^2$

Dividing both sides by 3.14

$\frac{3.14}{3.14} = \frac{3.14(r)^2}{3.14}\\1=r^2\\r^2=1\\r=1$

Circumference = 2πr

Circumference of prize wheel = $2*3.14*1\\$

Circumference of prize wheel = 6.28 feet

The circumference of wheel is 6.28 feet.

Keywords: area, circumference

Learn more about circumference at:

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3 years ago

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b) A = 15 x 8, so A = 120 cm²

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