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CBSE Class 8 Answered

the perimeter of a rectangle is 13 cm and its with is 2×3by4 find its length
Asked by nishakhurana23 | 15 Apr, 2020, 10:25: AM
answered-by-expert Expert Answer
Let 'l' be the length of the rectangle.
Given: Width 'b' = 2x(3/4), perimeter = 13 cm
Perimeter equals 2 left parenthesis straight l plus straight b right parenthesis equals 2 open parentheses straight l plus 2 cross times 3 over 4 close parentheses rightwards double arrow 13 equals 2 open parentheses straight l plus 2 cross times 3 over 4 close parentheses rightwards double arrow straight l plus 2 cross times 3 over 4 equals 13 over 2 rightwards double arrow straight l plus 3 over 2 equals 13 over 2 rightwards double arrow straight l equals 13 over 2 minus 3 over 2 equals 10 over 2 rightwards double arrow straight l equals 5 space cm

Hence, the length of the rectangle is 5 cm.
Answered by Renu Varma | 15 Apr, 2020, 11:15: AM

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