## anonymous one year ago The surface area of the figure below is 37.70 m2.

1. anonymous
2. anonymous

do you now the formula

3. anonymous

A=πr(r+h2+r2)

4. anonymous

plug that in to your cone and see what you get is true with the statement

5. anonymous

whats the height tho?

6. anonymous

@johnweldon1993

7. johnweldon1993

Wow that is a nasty looking formula up there What I would use is $\large SA = \pi r l + \pi r^2$ l = the slant height = 6 here r = radius of the base = 2 here

8. johnweldon1993

I mean you CAN use your formula up there I guess...but you would need to calculate the height of the cone, which isnt that bad...just a simple application of pythagorea's |dw:1433202454161:dw|

9. anonymous

50.27

10. johnweldon1993

That's what I get too :)

11. anonymous

thankss !

12. johnweldon1993

Of course!