Question

Please solve the question fast ​

Answer 1

Answer:

length= 3×5=15

breadth= 5

Step-by-step explanation:

2(3x+x)=40

2×4x=40

4x=40÷2

x=20÷4

x= 5

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Answer 2

Answer:

$l = 3x \: \\ b = x \\ > 2(l + b) = 40 \\ 2(3x + x) = 40 \\ 2(4x) = 40 \\ 8x = 40 \\ x = \frac{40}{8} \\ x = 5 \\ length = 3 \times 5 = 15 \\ breadth = 5$