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Elena-2011 [213]
3 years ago
12

Working out area in shapes

Mathematics
2 answers:
skad [1K]3 years ago
8 0
To find out the area of a rectangle or a square you have to multiply the length by the width of it. to find out the area of a triangle you have to divide the length by breath and half it.
to find out the area of a shape like a shape of the L letter, you have to separate the shape into squares,rectangles and triangles. like in the picture, i have separated the L shape into two rectangles you should find the area of each rectangle and add them together to get the whole area of the shape. 

Ivan3 years ago
7 0
To find the areas of shapes you need to substitute for each value of the formula, every shape has its own formula, usually. You should substitute and solve step by step and you will get your answer, the area.

Hope I helped ya!!<span />
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Short answer: no, absolute value is always positive

I hope this helps :)
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arsen [322]

we are given

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now, we can find x , y and z components

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Arc length calculation:

we can use formula

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now, we can plug these values

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now, we can simplify it

L=\int _0^{\frac{\pi }{4}}\sqrt{64+64tan^2(t)} dt

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L=\int _0^{\frac{\pi }{4}}8\sqrt{sec^2(t)} dt

L=\int _0^{\frac{\pi }{4}}8sec(t) dt

now, we can solve integral

\int \:8\sec \left(t\right)dt

=8\ln \left|\tan \left(t\right)+\sec \left(t\right)\right|

now, we can plug bounds

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L=8\ln \left(1+\sqrt{2}\right)..............Answer

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