## anonymous 5 years ago S=π (1.5) √((1.5)^2+(4)^2) how to you solve this to get the answer?

1. anonymous

S=π 1.5 √(1.5^2+4^2) actually its like this

2. anonymous

just break it into steps: $1.5^2 + 4^2$ then sqrt it. then multiply it by 1.5 and then if you are looking for a decimal answer multiply in your $\pi$

3. anonymous

I tried that but I keep getting the wrong answer? one time I got 4.6 then another time 0 and the answer is supposed to be 20.13n^2

4. anonymous

Okay, what do you get when you plug in $1.5^2$ and $4^2$ and when you add them.

5. anonymous

18.25

6. anonymous

yeah, now whats the sqrt of that?

7. anonymous

333.06

8. anonymous

Err I meant the square root of 18.25$\sqrt(18.25)$ not $18.25^2$

9. anonymous

4.3

10. anonymous

right, now take that times 1.5 and $\pi$

11. anonymous

ok how would I write that Im not doing something write I came up with zero again

12. anonymous

plug $4.3* \pi *1.5$into your calculator

13. anonymous

got 6.45$\pi$

14. anonymous

which is correct, you could also use 3.14 * $\pi$

15. anonymous

Ok Im confused then how do I get the 20.13n^2 answer