11
The perimeters of Square X and Rectangle Y are the same.
(a) Find the length of Rectangle Y.
(b) Find the area of Rectangle Y.
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6th
Maths
Mensuration
Perimeter of Shapes
The two adjacent sides of a...
MATHS
EASY
The two adjacent sides of a rectangle are 5x
2
−3y
2
and x
2
+2xy. Find the perimeter.
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ANSWER
Given adjacent sides of a rectangle are 5x
2
−3y
2
and x
2
+2xy
we know that the perimeter of a rectangle with adjacent sides a and b is 2×(a+b)
Perimeter=2((5x
2
−3y
2
)+(x
2
+2xy))
=2(6x
2
−3y
2
+2xy)
=12x
2
−6y
2
+4xy
∴Perimeter=12x
2
−6y
2
+4xy
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