$\bf \textit{circumference of a circle}\\\\ C=2\pi r~~ \begin{cases} r=radius\\[-0.5em] \hrulefill\\ C=13\pi \end{cases}\implies 13\pi =2\pi r\implies \cfrac{13\pi }{2\pi }=r\implies \boxed{\cfrac{13}{2}=r} \\\\[-0.35em] \rule{34em}{0.25pt}\\\\ \textit{area of a circle}\\\\ A=\pi r^2\qquad \qquad \implies A=\pi \left(\cfrac{13}{2} \right)^2\implies A=\pi \left( \cfrac{13^2}{2^2} \right)\implies A=\cfrac{169}{4}\pi$

6 0

2 years ago

What is the amount of money in a bank containing only dimes? 20.

Alex17521 [72]

Answer:

m=10d

Step-by-step explanation:

m=money in bank

d=number of dimes

3 0

2 years ago

Colin is making soap for gifts. The table shows the cost of the scented oils needed to make each kind of soap. He needs 1.5 ounc

kotegsom [21]

The answer is $9.57 hope this helps.

4 0

2 years ago