SOMEONE PLS HELP!!!! ITS TIMED AND DUE TOMORROW!
2 answers:
129 units²
The surface area is the area of all the surfaces basically.
so the three rectangular sides are 7 by 5, which gives you 35.
There's three of them, so 105.
There are also two triangular sides that are 6 by 4.
equation to find area of triangle is b · h, which is a fancy equation for half base times height.
so base times height, 24. Half is 12.
There are two sides, so 24 units squared.
105+24 is 129.
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If their perimeters are equal, we can add up all the side lengths of each triangle, and set the perimeters equal to each other to find the value of x that satisfies the equation:
x - 2 + x + 3x + 1 = 2x - 5 + x + 4 + 6x - 7
Combine like terms:
5x - 1 = 9x - 8
And finally, solve for x:
7 = 4x
x =
Therefore, x is equal to .
<em>Hope this helps! :)</em>