Question

Find the area and the circumfrence of a circle with diameter 8.
Use the value 3.14 for pi and do not round your answers

Answer 1

You know that the are of a circle is given by: pi*r^2

The circumfernce of a circle is given by: 2*pi*r

Now you have the a diameter of 8, which means the radius is 4.

Thus you have:

Area: 3.14*(4)^2

Circumference: 2*3.14*4

Answer 2

\[A= \pi r^2\]
\[Circumference = diameter *\ pi \]
\[r= \frac{diameter}{2} = \frac{8}{2} = 4\]
\[Area= 3.14 \times (4)^2=50.24\]
\[circumference = diameter \times 3.14 = 8 \times 3.14=25.12\]

Answer 3

thanku thanku thanku

Answer 4

oh did i mention the unit was in yd
so would it be 50.24 yd and circumference 25.12yd^2

Answer 5

no the area is yd^2 the circumferece is yd