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| 07 Oct 2014 07:52 PM
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i have to find the perimeter of a rectangle and the area of a triangle. but i'm not sure how to do it
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| 07 Oct 2014 07:54 PM
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just divide them by each other and you have your answers
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| 07 Oct 2014 07:59 PM
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I mean like this
Perimeter is equal to all sides added together, so that's the easy one.
Area is where it gets tough, so for example if you were given a circle with radius "r" you would use this equation:
pi*(r^2)
But you didn't say what type of triangle it was, so I don't know how to help you with that.
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| 08 Oct 2014 10:13 AM
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If it's a right triangle you should be able to find the area by doing this
If you had an angle of x degrees, you'd do this: (area = base * height * sin(x))
so let's say the bottom is 5m long and the top is 2m high, and the angle is 60 degrees. So you would get:
(5m*2m*0.86602)
And then you just convert from cm or whatever into inches or whatever.
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