Question

Please help with math.

Answer 1

@mastermindkakashi @StudyGurl14

Answer 2

Area of a circle: \(\large r^2\pi\)
r= radius

Answer 3

You are given the diameter (8cm). Diameter is two times the radius.

Answer 4

So it would be 8cm * 2*radius? Now what is radius though??? @StudyGurl14 @mastermindkakashi

Answer 5

Not quite.
\(\large Diameter=2r\rightarrow 8cm=2r\rightarrow r= 4cm\)
So the radius is 4cm. Plus that into \(\large r^2\pi\)

Answer 6

so 8cm times 4cm??

Answer 7

radius is half the diameter, so half of 8 is 4. then to solve for the area, the formula is (3.14 x 4 squared)

Answer 8

So what all do I multiply together is what i don't get.

Answer 9

yes the x means multiply

Answer 10

I know :)

Answer 11

so i multiply 3.14 and 4?

Answer 12

r = 4
If the formula is \(\large r^2\pi\), then... \(\large\rightarrow (4)^2\pi\)
Remember that \(\large\pi= 3.14\)

Answer 13

@KoolCid1 don't forget the exponent

Answer 14

ah well then yes you multiply 3.14 and 16 since you have to square 4 (which is 4 x 4)

Answer 15

\(\large (4)^2\pi=(4)(4)(3.14)\)