Geometry / Find area and perimeter of a figure

Looking4help90029

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How do I find (a) the area and (b) the perimeter of a right triangle. The base is 13 m, the leg is 5m and the other leg is unknown.
Can someone please help.
 
How do I find (a) the area and (b) the perimeter of a right triangle. The base is 13 m, the leg is 5m and the other leg is unknown.
Can someone please help.

First apply Pythgorean Theorem to find the 3rd side.
 
How do I find (a) the area

The formula for the area of a triangle is:

A = 1/2 * base * height


and (b) the perimeter

The word "perimeter" means the distance all the way around. Once you know the length of all three sides, you simply add them together:

P = base + height + hypotenuse


The base is 13 m, the leg is 5m and the other leg is unknown.

You need to learn some terminology for right triangles.

A right triangle does not have a base and two legs; it has two legs and a hypotenuse.

The "hypotenuse" is what we call the longest side.

In your exercise, the given base (13) is one of the legs, and the height (5) is the other leg.

That's enough information for you to calculate the area, using the formula above.

Subhotosh told you how to find the length of the hypotenuse. You need that length, for the perimeter formula.
 
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I am glad that Denis was somehow (i.e., without a diagram) able to definitely determine the correct interpretation. :cool:
 
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