Question

Find the area of the circle with the given radius or diameter. Use = 3.14.

d = 13

A = 265.33 sq. units

correct me if im wrong?..

Answer 1

d=13
therefore
\[r= \frac{13}{2}\]
\[Area-of-circle= \pi r^2 = 3.14\times (\frac{13}{2})^2=3.14\times \frac{169}{4}\]
\[=\frac{530.66}{4}=132.665 units^2\]
Youer ans doesn't matches with this one > i think that you have substituted d=13 which is wwrong that is diameter convert it into radius dividing it by 2 i.e.
\[r= \frac{d}{2}\]

Answer 2

dam im really not good at these.. :/ thank you