## anonymous 4 years ago Express the area of each figure as a monomial. How would I solve 7x^4 if the formula is s^2 Steps on how you got the answer are appreciated, it'll help me on my test. Thanks.

1. myininaya

are you saying we have a square and each side has length 7x^4?

2. myininaya

if so then you do $(7x^4)^2=7^2x^{4 \cdot 2}$

3. myininaya

$=49x^8$

4. anonymous

|dw:1327185937099:dw|

5. anonymous

not sure if the fact that it's a circle and not a square would affect the outcome of the answer..

6. anonymous

What do you mean by "each figure"? the circle?

7. anonymous

Yes.

8. anonymous

So, you want the area of the circle in terms of x?

9. anonymous

Honestly, I have no idea what this question is asking me to do.. It just tells me to express the area of the figure as a monomial.

10. myininaya

but the figure they give you is a circle right?

11. myininaya

$A=\pi r^2=\pi (7x^4)^2$

12. myininaya

area of a circle is pi times radius squared

13. myininaya

the radius in the circle you drew above is 7x^4

14. myininaya

so i replaced r with 7x^4

15. anonymous

you beat me to it myin

16. myininaya

$A=\pi(7^2 \cdot x^{4 \cdot 2})$ :)

17. myininaya

$A=49x^8 \pi$

18. myininaya

since 7^2=49 and x^(4 times 2)=x^8

19. anonymous

Thank you :)