Question

Find the area :
Trapezoid: b(1)= 9 7/8, b(2)= 5 3/4, h= 6 2/3

Answer 1

First, you need the formula for the area of a trapezoid (or you need to figure it out, which is possible but harder to do)

Answer 2

I know the formula hun

Answer 3

do you know the formula for the area of a trapezoid ?
http://www.mathgoodies.com/lessons/vol1/area_trapezoid.html

it is
A= ½ * (b1 + b2) * h
replace b1 and b2 with the numbers
replace h with the numbers
change the mixed numbers to improper fractions
add the fractions b1 + b2 (you will need a common denominator... use 4)

if you get this far , what do you have ?

Answer 4

* make the common denominator 8 (not 4)
add the fractions b1 + b2 (you will need a common denominator)

Answer 5

ive did part of what u said and I now have A= 1/2(79/8 + 23/4) *20/3

Answer 6

looks good so far.

you want 23/4 to have a denominator of 8 so that it matches 79/8
multiply BOTH top and bottom by 2 to get 46/8
now you can add the tops

Answer 7

Ok I got that so far

Answer 8

what do you have now ?

Answer 9

I added the numerators and I got 125/8

Answer 10

yes, so the problem is now
\[ \frac{1}{2} \frac{125}{8}\frac{20}{3} \]
I would simplify first, and then multiply the tops, and multiply the bottoms

Answer 11

Okay thanks ill let u know what I come up with in a sec hun , sorry for the wait I had to discuss somethings with my family

Answer 12

hey hun I cant simplify if I do then what should I do ?