Question

please solve it step by step​

Answer 1

let

• length of the rectangle =4x
• breadth of the rectangle = X

given

• perimeter of the square = 1200 m
• the side of the square is = 70 m

Find

• the perimeter of new square = ?

Solution

.

.Length = 4x

.Length = 4xBreadth=x

.Length = 4xBreadth=xPerimeter of rectangle = 2(Length +Breadth)

2(Length +Breadth)2(4x + x) = 1200

2(Length +Breadth)2(4x + x) = 12005x = 600

2(Length +Breadth)2(4x + x) = 12005x = 600→ x = 120m

2(Length +Breadth)2(4x + x) = 12005x = 600→ x = 120mTherefore, Length (4x) = 4 x 120 = 480m

Therefore, Breadth (x) = 1 x 120 = 120m

Area of rectangle = Length x Breadth

Area = 480 x 120

Area 57600 m²

Calculation for square :

Side = 70m.

Area = ?

Area of square = Side x Side

Area = 70 x 70

Area = 4900 m²

Answer 2

Answer:

1000m

Step-by-step explanation:

Let length=4x

Breadth=x

2(l+b)=1200m

10x=1200

x=120

Length=480m

Breadth=120m

Area=120×480m

= 57600m²

Side of square=70m

Area=70×70

=4900m²

Area of new square=57600+4900

=62500m²

Side of new square=√62500m²

=250m

Perimeter of new square=4×Side

=250×4

=1000m

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