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9. 4. The perimeter of triangle is 13cm and its width is 2-3/4and find its length
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Answered by
0
Answer:
The perimeter of a rectangle is 13 cm and its breadth is 2 3/4cm
let lenght be l
now 2 3/4
=> 11/4 cm
perimeter of rectangle = 2(l+b)
so ,
13 = 2(l+b)
13 = 2(l+11/4)
13 = 2l +11/2
13 - 11/2 = 2l
26-11/2 = 2l
15/2 = 2l
=>l= 15/2*2
=>l = 15/4cm
hope it helps u
:)
Answered by
0
Answer:
Let 'l' and 'b' the length and width of the rectangle respectively.
Given, b=2 cm = cm
perimeter of the rectangle = 13 cm
2(l + b) = 13
⇒ 2l + 2b = 13
⇒2l + 2( ) = 13
⇒2l+ 2 =13
⇒2l = 13 −
⇒2l=
⇒ l = cm
∴ length of the rectangle = cm
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