## ZyairaBoyd 3 years ago What is the length of side GH? Help needed ASAP!

1. ZyairaBoyd

2. dpaInc

that picture is a little ambiguous... which quadrilateral has an area of 60 square cm... rectangle GHJK , or trapezoid GHIK

3. AnimalAin

Recall that A = lw. You have the width and the area, so you can use that to get the length.

4. dpaInc

well, if it's the area of rectangle GHJK then the answer is easily obtained by the area formula: A=L*W 60 = L*4

5. dpaInc

divide 4 from both sides... but that's a little too easy. maybe it's the trapezoid you think?

6. ZyairaBoyd

divide 4 frm where?

7. dpaInc

If the 60 is actually the trapezoid, the area formula is A = (1/2) (base1 + base2)*height. GH is base1 and KI is base2. A=60, height = 4. plug all these into that formula and solve for base1 (GH)

8. ZyairaBoyd

1/2(4+18)?

9. ZyairaBoyd

@dpaInc

10. ZyairaBoyd

gave me 11

11. dpaInc

(1/2)(base1 + 18)*4 = 60 this is the equation you need to solve for base1. divide both sides by 2 to get rid of the (1/2)*4 then subtract 18 from both sides to solve for base1

12. ZyairaBoyd

Ty i got the answer right :D @dpaInc

13. dpaInc

all right!!! yw... :)