Question

Estimate the area of the circle, use 22/7 for π

Answer 1

Use the equation \[2\pi r^2\]

Answer 2

Area of a circle is \[\large A=\pi \times r^{2}\] Right now we have the diameter, which is 28. To get the radius, we have to divide the diameter by 2. So \[\large \frac{28}{2}=r\] Once you get the r tell me and we'll plug it into the area of a circle formula :)

Answer 3

@Sachintha it looks like you combined the circumference formula and area formula together.

Answer 4

Sorry my mistake.. :D

Answer 5

So 28 / 2 = 14

Answer 6

@TheMathAsker Give it a try as @LegendarySadist said.

Answer 7

Right. And since we're using 22/7 for pi, it would look like this \[\large A=\frac{22}{7} \times 14^{2}\] The next step is to find 14^2

Answer 8

Its 196?

Answer 9

Yep that would be it, good job :). So now we are gonna multiply 196 by 22/7. Which will look like this \[\large A=\frac{22*196}{7}\] So our next step is to find 196*22

Answer 10

That would be 4,312

Answer 11

Right, good job. Now we have to divide 4312 by 7. Which will look like this \[\large A=\frac{4312}{7}\] This is gonna be our final step :)

Answer 12

616?

Answer 13

Yep, that would be our answer, so \[\large A=616\] or more specifically \[\large A=616cm^{2}\]

Answer 14

Thank you so much !!!!!! c:

Answer 15

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