Question

The perimeter of a rectangle is 230cm and length of a rectangle is 70cm find area and breadth

Answer 1

Breadth=45 cm and Area = 3150

Explanation:

Length= 70 cm and breadth =?

Perimeter=2(l+b)

or,230=2(70+b)

or,230=140+2b

or,230-140=2b

or,90/2=b

or,b=45cm

Breadth=45cm and Length=70cm

Area=l×b

=70×45

=3150cm^2

Answer 2

Question-:

The perimeter of a rectangle is 230 cm and length of a rectangle is 70 cm. Find area and breadth of the rectangle.

Explanation -:

In this question we are given that the perimeter of a rectangle is 230 cm and the length of the rectangle is 70 cm. We are asked to calculate the area and breadth of a rectangle.

`\small{ \underline{\frak{ First \: we \: will \: calculate \: the \: breadth}}}`

Let us assume the breadth as b.

We know,

Perimeter = 2(L + B)

→ 230 = 2(70 + b)

→ 230/2 = 70 + b

→ 115 = 70 + b

→ 115 - 70 = b

→ 45 = b

breadth = 45 cm

`\small \underline{\frak{ Now \: we \: will \: calculate \: the \: area }}`

Area = L × B

→ Area = (70 × 45) cm²

Area = 3150 cm²

• Hence the breadth and area are 45 and 3150 respectively.

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