If the area of parallelogram ABCD = 246 mm2 and h = 20.5 mm, what is the length of the base of triangle ABD?

A.12 mm**
B.24 mm
C.123 mm
D.There is not enough information given.

32 answers

area of ||gram = (1/2)(a+b)(height), where a and b are the parallel sides

246 = (1/2)(a+b)(20.5)
a+b = 24

So all we know is that the two parallel sides add up to 24, so
not enough info
Thanks
The answer is A- 12mm. I just took this test and used reinys answer and I lost a point
The test answers if it's unit 2 lesson 2 are
B
C
C
B
A
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B
C
C
B
A

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B
C
A
D
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FOR CONNEXUS STUDENTS

B
C
C
B
A
100% correct
Thx
Thank you, I thought I would never find the answer.
thanks Connexus 7
This is for SCCA 7B Lesson 2 Unit 3 Area and Perimeter of a Triangle.
1. B. 11.55 m
2. C. 181.12 m
3. C. 21 m
4. Find the height of a triangle with area = 110 ft and a base = 10 ft.
B. 22 ft
5. If the area of parallelogram ABCD = 246 mm and h = 20.5 mm, what is the length of the base of the triangle ABD?
A. 12 mm
1. B. 11.55 m
2. C. 181.12 mm
3. C. 21 m
4. B. 22 ft
5. A. 12 mm
💯👍
This is for SCCA 7B Lesson 2 Unit 3 Area and Perimeter of a Triangle.
1. B. 11.55 m
2. C. 181.12 m
3. C. 21 m
4. Find the height of a triangle with area = 110 ft and a base = 10 ft.
B. 22 ft
5. If the area of parallelogram ABCD = 246 mm and h = 20.5 mm, what is the length of the base of the triangle ABD?
A. 12 mm
👍💯
still works in 2020 thnx guys
2022 correct!
i suggest using h t t p s : / / w w w .symbolab.com/solver/triangle-area-perimeter-calculator/triangle%2C%20find%20Height%2C%20given%20Area%3D110%2Cb%3D10