Help ill fan and reward! (: thanks!

Question

anonymous · Answer

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 · Answer

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

anonymous · Answer

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

vocaloid · Answer

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

anonymous · Answer

@Vocaloid

anonymous · Answer

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

vocaloid · Answer

can you show me how you got the answer 112?

vocaloid · Answer

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

mahmood786123 · Answer

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

anonymous · Answer

ok @Vocaloid

vocaloid · Answer

previous answer is incorrect

anonymous · Answer

thanks @Mahmood786123

vocaloid · Answer

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

mahmood786123 · Answer

but you see what @Vocaloid has to say

anonymous · Answer

i will

mahmood786123 · Answer

base times hight 8 times 18 144

mahmood786123 · Answer

thats what my school taught me how to do it

vocaloid · Answer

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

mahmood786123 · Answer

oops wrong formula

anonymous · Answer

i did 18 x 8

anonymous · Answer

144

vocaloid · Answer

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

vocaloid · Answer

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 · Answer

184

vocaloid · Answer

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

anonymous · Answer

16

vocaloid · Answer

great, so what is 16*8?

anonymous · Answer

128

vocaloid · Answer

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 · Answer

(: thank you so much

anonymous · Answer

can you help with more?

vocaloid · Answer

I guess, sure

anonymous · Answer

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

vocaloid · Answer

sure, just tag me when you're done

anonymous · Answer

i will