the perimeter of a rectangle is 13 cm and its width is 2 3/4 find its length in cm
Answers
Answered by
3
Answer:
perimeter = 2(l+b) = 13
given breadth = 11/4 cm
=> 2( l + 11/4 ) = 13
=> (4l + 11/4)(2) = 13
=> 8l +22 = 52
=> 8l = 30
=> l = 15/4cm
Answered by
1
Answer:
3 3/4
Step-by-step explanation:
Perimeter = 2 [l+b]
length = 13 ÷ 2 - 2 3/4
= 6 1/2 - 2 3/4
= 13/2 - 11/4
= LCM = 4
= 13/2 ×2/2 = 26/4
= 26/4 - 11/4 = 15/4 cm
= 3 3/4 cm
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