Question

Jordana was shown this diagram of an isosceles trapezoid and its reduction. She was asked to find the perimeter of the

reduced trapezoid. Her work is shown below.
30 cm
A
12 cm
4 cm
B
36 cm
Figures not drawn to scale.
Scale factor
Jordana's Work
4.
123
Side A
30x3 =10
Side B
30 x
10
3
Perimeter
10+ 10+4+4 = 28

Answer 1

The question is unclear to me, 30x3=10 WHAT, 30x3=90 not 10

And also it seems you already know the answer Perimeter=28cm

Answer 2

C.

Explanation:

Jordana made a mistake when she calculated the length of side B.