Math, asked by yogeshgupta61, 2 months ago

विच वर्ड फ्रॉम द पैसेज मी नॉरमल
9? \times \frac{?}{?}

Answers

Answered by Anonymous
2

Answer࿐

Given:

Perimeter of a rectangle = 260 cm.

Breadth of the rectangle = 60 cm.

To find:

The length of the rectangle.

The area of the rectangle.

Formulae used:

Perimeter of rectangle = 2(l+b) units

Area of rectangle = lb sq.units

Solution:

As per the given data, the known values are- the measure of perimeter and the measure of breadth. We're asked to find the length and area of the rectangle. How can we find its length? Simple! It's calculation can be carried out by substituting the given measures in the formula of perimeter of rectangle and solving for the unknown value, i.e, the measure of length.

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↪️Finding the length of the rectangle:

On substituting the measures-

⟼ Perimeter = 2(l + b)

⟼260=2(l+60)

⟼260=2l+120

⟼(260−120)=2l

⟼140=2l

⟼ 2140 =l

⟼ 70cm=Length

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↪️Finding the area of the rectangle:

Length = 70 cm

Breadth = 60 cm

On substituting measure

⟼ Area = lb sq.units

⟼Area=(70×60)

⟼ Area=4200cm 2

∴ Thelengthoftherectangleis 70 cm anditsareais4200 cm

2

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Some formulae for AREA:

Square = s² sq.units

Triangle = 1/2 (bh) sq.units

Trapezium = 1/2 h(a+b) sq.units

Parallelogram = bh sq.units

Rhombus = 1/2 d₁d₂ sq.units

Circle = πr² sq.units

Semi-circle = 1/2 πr² sq.units

Quadrant of circle = θ/360° πr² sq.units

Annulus = π(R² – r²)

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