Question

the length of a rectangular hall is 3 metres more than double of its breadth. if its perimetre is 66 metre, what is its length?

Answer 1

Answer:

13 m

Step-by-step explanation:

Define x:

Let the breadth be x

The length = x + 3

Solve x:

The perimeter is 66 m

2( Length + Breadth) = 66

2 (x + 3 + x ) = 66

2(3x + 3) = 66

3x + 3 = 33

3x = 30

x = 10

Find the length:

Length = x + 3 = 10 + 3 = 13 m

Answer: 13 m

Answer 2

QUESTION-: The length of a rectangular hall is 3 metres more than double of its breadth. if its perimetre is 66 metre, what is its length?

$\underline{\underline{\Huge\mathfrak{Solution-}}}$



Let breadth of. rectangle be x

length =3+2x

perimeter=66

then 2(L+B)=66

2(3+2x+x)=66

2(3+3x)=66
6+6x=66
x=10.


➡️Then length equals to 3+20=23metre.