Question

Find the area of a circle with a radius of 7 inches. Use 3.14 for pi

Answer 1

\[A=\pi r^2=\pi (7)^2=\pi (49)=49\pi \]

Answer 2

but use 3.14 for pi
so we have
\[A=(3.14)(49)\]

Answer 3

By using following formula
Area=pi*r^2

Answer 4

\[A=\pi r^2\]


\[A=(3.14) (7)^2\]


\[A=(3.14) (49)\]


\[A=153.86\]

So area is roughly 153.86 square inches.

Answer 5

(1)
(1)(3)
3.14
* 49
----------------
2826
+12560
----------
153.86 since decimal was over twice in one over the #s

Answer 6

\[\int_{0}^{7}2pi\ r\ dr\]