if p=perimeter of a rectangle, l= it's length and b= it's breath,find: (i) l,if p=80cm and b= 10cm.
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Answer:
peimeter of rectangle 2*l+b
b=80-10=70
70/2=35
breadth =35
=2*l+b
=2*35+10=80
Step-by-step explanation:
Answered by
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Answer:
L = 30
Step-by-step explanation:
Let L be x
Let B be y
perimeter of area = 2L + 2B
therefore 2x + 2y = 80 ( Given)
therefore 2x + 2(10) = 80. ( Given )
therefore 2x + 20 = 80
therefore 2x = 80 - 20
therefore 2x = 60
therefore x = 60 ÷ 2
therefore x = 30
length = x = 30
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