# Math

What are the perimeter and area of a triangle with a length of 20 inches and a with of 15 inches(1 point)

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3. 👁 61
1. First of all, you have to find the formula for the triangle. For perimeter you add so I believe that you add 20 and 15 to get the perimeter. For area you multiply. The formula for this is 1/2 x b x h so I would believe it is 20 x 15 divide by 2 (1/2 is the same as 2 when you use this formula) now im only young and if im wrong im sorry but I think this is right, is it multiple choice?

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posted by whatever
2. If it is multiple choice can I see the choices?

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posted by whatever
3. rectangles have length and width. Triangles have three sides.
So, if you meant rectangle, then since there are 2 each of length and width, the perimeter is

2(length+width) = 2(20+15) = 70
area = length x width

If you meant triangle, then the area is indeed 1/2 bh, but just specifying base and height of a triangle does not give enough information to get the perimeter.

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posted by oobleck

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