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gabrielbergemancat
11.04.2021 •
Mathematics
What must be the sides of an equilateral triangle so that it's area should be equal to the area of an isosceles triangle with base 12m and equal sides 10m
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Ответ:
The sides of the equilateral triangle are 11.7 m.
Step-by-step explanation:
Let's find the area of the isosceles triangle:
Where:
b: is the base = 12 m
h: is the height
We can find the height by using Pitagoras:
Where:
x is the hypotenuse = side of the triangle = 10 m
Then, the area is:
Now, since the area of the isosceles triangle is equal to the area of the equilateral triangle:
The height of the equilateral triangle is given by:
Hence, the sides are:
Therefore, the sides of the equilateral triangle are 11.7 m.
I hope it helps you!
Ответ:
Explanation: First find angle TVU. Line TV is straight line so 180°. Subtract 180 from 46 to find angle TVU. Angle TVU = 134.
All angles of a triangle adds up to 180. Find angle U by subtracting 180 by angle TVU and angle T. 180 - 29 - 134 = 17