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what is the greatest possible area of a triangle with one side of length 7 and another side length of 10?
a.17
b.34
c.35
d.70
e.140

and why?

2007-02-17 08:30:40 · 9 answers · asked by Anonymous in Science & Mathematics Mathematics

9 answers

Since the area of a triangle is base x height, the maximum area would be achieved with a right triangle. If you choose either of the sides as the base, placing the other known side at right angles to the base will produce the maximum height.

2007-02-17 08:39:09 · answer #1 · answered by Anonymous · 0 0

Let the base of your triangle be 10 (I could use 7, but 10 is evenly divisible by 2.)
The area of any triangle is (1/2)bh.
(1/2)(10)h = 5h
h for this triangle can never exceed 7, which is its value when the 7 is perpendicular to the 10, so the maximum area of this triangle must be 5*7 = 35

2007-02-17 17:02:11 · answer #2 · answered by Helmut 7 · 0 0

If it's a right triangle, the area is 35: base times perpendicular height, divided by 2.

If it's not, then a lot more math is needed to figure it out.

2007-02-17 16:35:17 · answer #3 · answered by mom 7 · 0 0

c.35

dunno, something along the line of 7 x 10 = 70
70 divide 2 = 35

2007-02-17 16:36:18 · answer #4 · answered by KerzaSmith 2 · 0 0

A because the other side can not have a side better than the rest the of the triangle.

2007-02-17 16:56:46 · answer #5 · answered by Moanika 6 · 0 0

c. 35. A right triangle would give you the greatest area.

2007-02-17 16:36:52 · answer #6 · answered by Anonymous · 0 0

c. 35 because you multiply 10*7 and get 70 but when you are trying to find the area you have to take half so you divide by 2 and you get 35.

35+35=70
70/2=35
remeber to take half and thats how you get your answer.

2007-02-17 19:06:24 · answer #7 · answered by meme123 2 · 0 0

Since A = ½bh and h = Lsinα, for max area α must be 90°
Ergo, c. is correct

2007-02-17 16:40:59 · answer #8 · answered by Steve 7 · 0 0

idk d because i like 70 and im not good at math
srry thats my answer and im stickin to it

2007-02-17 16:37:08 · answer #9 · answered by Jessica S 2 · 0 1

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