Question

3 A rectangular field is 50 m long and 30 m broad. All sides of the field have to be walled. the length of the wall.​

Answer 1

rectangular field 70m long and 50m wide has a path of uniform width around it . if the area of the path is 1024 sq.m.find the width of the path
Draw the picture of a rectangle inside a rectangle.
The area of the inner rectangle is 70*50 = 3500 sq. meters
Area of the outer rectangle = (70+2x)(50+2x) = 4X^2 + 240x + 3500
Equation:
Outer area - Inner area = 4x^2+ 240x = 1024
x^2+60x-256 = 0
(x-4)(x+64) = 0
Positive Solution:
x = 4 meters.
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