Hello!
I found this question that i didn't know the answer to it..The answer book said that the answer is 13cm but without proof..If anyone could tell me the proof that would be great :).
ABCD is an isoscles trapezium in which AD // BC, if BC=2AD=20cm and its area is 180, find the length of each of its legs.
BC=20cm
AD=10cm..
+12530 ABCD is an isoscles trapezium in which AD // BC, if BC=2AD=20cm and its area is 180, find the length of each of its legs.
+4622 You want to draw a diagram first...see Omi67's diagram.
Next...use the area of the trapezoid formula to find the height, which is 1/2(30h)=180, h=12.
Extend both sides to create a 5-12-13 triangle, and the length of each of the legs is 13 centimeters.
Agreed with Omi67 !
