That question can't be answered without seeing the drawing. We need to know the
shape of the figure, what part of it is labeled 'x', and any numbers that are given.
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p = 75+75+45+45=240cm a = 75 x 45 = 3375cm
{x, y} = {3, 5}.
There no such thing as perimeter of 3D objects . Generally perimeter is for 2D objects but you can find the surface are of a cube if you wished to ask that. Surface area of cube is - 6 x side x side.
A pentagon is a 5-sided figure, and the perimeter is the sum of the lengths of all the sides. A pentagon with 15-inch sides, will have 5 x 15 inches = 75 inches as its perimeter.
how do you find the area of a rectangle witha perimeter of 36 in You don't. You need more information For example a 1 x 17 rectangle has a perimeter of 36 and its area is 17. But a 2 x 16 rectangle also has a perimeter of 36 and its area is 32.