Question

Q. The perimeter of a rectangle is 240 cm if the breadth of the rectangle is 30 cm find its length also find the area of rectangle​.


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Answer 1

Answer:

$perimeter = 240cm \\ b = 30cm \\ to \: find = l \: and \: area \: of \: rectangle \\ \\ perimeter = 2(l + b) \\ 240 = 2(l + 30) \\ l + 30 = \frac{240}{2} \\ 120 = l + 30 \\ l = 120 - 30 \\ l = 90cm$

therefore length = 90 cm

$area \: of \: rectangle = l \times b \\ = 90 \times 30 = 2700 \: sq \: cm$