The circumference of a coin is 7.42cm. what is the diamater, radius, and area? use 3.14 for π

So circumference of a circle is , with r = radius. Using what we have, we can solve for r.

Firstly, multiply everything on the right side of the equation.

Next, just divide both sides by 6.28, and your answer should be

Next, the diameter is just the radius times 2, which is 2.36.

Lastly, Area of a circle is . Using what we have, we can solve for area.

Firstly, solve the exponents:

Next, just multiply the right side, and your answer should be

In short, 1.18 cm is the radius, 2.36 cm is the diameter, and the area is 4.37 cm^2

hi

step-by-step explanation:

the answer is 200

step-by-step explanation:

the way the question is worded, it seems to imply the $264 interest is simple interest, not compound interest.

the simple interest for 2 years is $264; the simple interest for 1 year is $132.

$132 interest on a $600 investment means an interest rate of (132/600)*100 = 22%.

the value of $200 at 22% interest compounded annually for three years is

200%281.22%29%5e3

the amount of interest is that value, minus the original $200.