The length of a rectangular solar panel is 5% more than its breadth. If the area of the solar panel is 210 m², find its breadth.

The length of the solar panel is 5% more than its breadth.

The area of the solar panel is 210 m².

Area of a rectangle = Length × Breadth

Let the breadth of the solar panel be b meters, and the length be l meters.

Since the length is 5% more than the breadth, So,

l = b + 0.05b = 1.05b

Now, Using the formula for the area of a rectangle:

l × b = 210

1.05b × b = 210

​$$1.05b^2 = 210 \\b^2 = \frac{210}{1.05} = 200 \\$$​​

​$$b = \sqrt{200} = 10 \sqrt 2 \, \text{meters}$$  ​