Question

If the area of triangle ADE is 60 square units, what is the area of the trapezoid BCED?

Answer 1

\[\frac{ A _{1} }{ A _{2} } = \left( \frac{ l _{1} }{ l _{2} } \right)^{2}\]
you have area A1 and L1 and L2 length given..

Answer 2

60/x=7/4
X=15

Answer 3

u also have to square 7/4 too

Answer 4

im confused

Answer 5

umm well u have to plug in the values in the formula i wrote.. in frmula L1 and L2 are in braket which is squared.

Answer 6

19.59 ?

Answer 7

yeah.

Answer 8

but thats not one of the answer .. that why im confused
A) 11.02
B)48.98
C)24.98
D)53.84

Answer 9

O.o how can i miss.

Answer 10

this formula is for similar figure if u put 4 in denominator its finding for trapeziod which is not similar to a triangle right?

Answer 11

right

Answer 12

ok so u cant pick 4 as 4 is side of trapeziod not the smaller triangle so u would have to pick 3 instead of 4... that will give u the area for smaller triangle.

Answer 13

so it would be 60/x=7/3
x=135
or x=25.71

Answer 14

135 is when 7/3 is squared

Answer 15

noo.. (7/3)^2 .. u forgot to square it

Answer 16

x=11.02?

Answer 17

yeah right ...
well this is the area f small triangle.. you have the area for larger one too.. so larger - smaller gives u the area for trapezoid.

Answer 18

so 60-11.02=48.98
so 48.98 is the answer right !?

Answer 19

yeah i think it's right.

Answer 20

okay thank you ! :D

Answer 21

you're most welcome. :)