Question

Question content area top
Part 1
Compose this triangle into a parallelogram. What is the area of the​ triangle? What is the perimeter of the​ triangle?
30.1 m
19.2 m
15.5 m
8.6 m
Question content area bottom
Part 1
Which figure below shows the triangle composed into a​ parallelogram?
A.
19.2 m
8.6 m
15.5 m
B.
8.6 m
19.2 m
C.
30.1 m
19.2 m
15.5 m
8.6 m
D.
30.1 m
19.2 m
8.6 m
15.5 m
Your answer is correct.
Part 2
The area of the triangle is
  
129.43 m Superscript 2.
Part 3
The perimeter of the triangle is
  
129.4 m.

Answer 1

You have the right parallelogram and the area, but the perimeter is off.

- Composing two congruent copies of the triangle makes a parallelogram with base 30.1 m and height 8.6 m — correct choice.
- Area of the triangle = 1/2 × base × height = 1/2 × 30.1 × 8.6 = 129.43 m^2 (≈129.4 m^2).
- Perimeter of the triangle = sum of its three side lengths = 30.1 + 19.2 + 15.5 = 64.8 m.

You likely doubled the area by mistake when reporting the perimeter.