Help ill fan and reward! (: thanks!

- anonymous

Help ill fan and reward! (: thanks!

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- anonymous

Alex wants to paint one side of his skateboard ramp with glow-in-the-dark paint, but he needs to know how much area he is painting. Calculate the area of the isosceles trapezoid.

- anonymous

|dw:1434046250486:dw|This is it (:

- anonymous

I believe the answer is 112 but i need to be sure of it.

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## More answers

- Vocaloid

hm, not quite, can you show me your math?

- anonymous

@Vocaloid

- anonymous

its multiple choice here are the answers 112 ft2
128 ft2
132 ft2
144 ft2

- Vocaloid

can you show me how you got the answer 112?

- Vocaloid

i want to make sure you aren't just guessing, ok? :)

- Mahmood786123

1. do base times hight which is 8 times 18
2. you have your answer
I think thats how you do it

- anonymous

ok @Vocaloid

- Vocaloid

previous answer is incorrect

- anonymous

thanks @Mahmood786123

- Vocaloid

Mahmood's answer is incorrect, please show me how you got your answer

- Mahmood786123

but you see what @Vocaloid has to say

- anonymous

i will

- Mahmood786123

base times hight 8 times 18 144

- Mahmood786123

thats what my school taught me how to do it

- Vocaloid

nope, this is a trapezoid, not a rectangle
to find the area of the trapezoid, use the formula A = height*(base1+base2)/2

- Mahmood786123

oops wrong formula

- anonymous

i did 18 x 8

- anonymous

144

- Vocaloid

not quite, that would be a rectangle, not a trapezoid

- Vocaloid

to find the area of a trapezoid:
take the top part (14), add the bottom part (18), then divide by 2
then multiply by the height (8)

- anonymous

184

- Vocaloid

not quite...
let's break it down step by step:
what is (14+18)/2?

- anonymous

16

- Vocaloid

great, so what is 16*8?

- anonymous

128

- Vocaloid

excellent! that's the area of the trapezoid!
remember: to find the area of a trapezoid, add the two bases together, divide by 2, then multiply by the height

- anonymous

(: thank you so much

- anonymous

can you help with more?

- Vocaloid

I guess, sure

- anonymous

ok im going to make new question so i can give you more medals if you help

- Vocaloid

sure, just tag me when you're done

- anonymous

i will

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