Question

the perimeter of a rectangle is 230 cm if the lenght of the rectangle is 70cm find its breadth and area

Answer 1

Answer:

$\rightarrow$ Breadth = 45 cm

$\rightarrow$ Area= ${3,150\:cm}^{2}$

Step-by-step explanation:

Finding Breadth -

Taking breadth as 'x'.

$\color{black}\boxed{\colorbox{saffron}{Perimeter-2(length+breadth) }}$

$230 = 2(70 + x) \\ \\ 230 = 140 + 2x \\ \\ 230 - 140 = 2x \\ \\ 90 = 2x \\ \\ \frac{90}{2} = x \\ \\ 45 = x$

So, breadth = 45 cm

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Finding Area-

$\color{black}\boxed{\colorbox{saffron}{Area - length×breadth}}$

$70 \times 45 \\ \\ = {3,150 \: cm}^{2}$

Answer obtained respectively.

Answer 2

Step-by-step explanation:

Perimeter of rectangle = 2 (lxb)

230 cm = 2(70+b)

230-140=2b

90=2b

45=b

Therefore breadth is 45 cm

Area of rectangle = lxb = 70x45=3150 cm ²

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