Question

plz solve the problem no.2 step by step

Answer 1

Rectangle :
2x + y + 8 = 4x - y
Y + 8 + y = 4x - 2x
2y + 8 = 2x. ( ÷ 2)
Y + 4 = x
Therefore y = x-4......[1]
2y = x + 4
From [1]
2 (x - 4 ) = x+4
2x - 8 = x+4
2x-x = 8 +4
Therefore ,
☆ x = 12
Y = x - 4
= 12 - 4
☆ y = 8
Length = 4x - y
4(12) - 8
48 - 8 = 40
Breadth = x + 4
12 + 4 = 16
Perimeter = 2 ( l+b)
2(40 + 16 )
2 (56)
= 112 units
Area = l × b
= 40 × 16
=640 sq.units