Final answer:
To find the perimeter of the rectangle, add up all four sides. The formula for the perimeter of a rectangle is P = 2(l + b), where P is the perimeter, l is the length, and b is the breadth. Plugging in the values, we get P = 2(20 + 10) = 60 cm.
Step-by-step explanation:
To find the perimeter of a rectangle, add up all four sides. In this case, the length is 20 cm and the breadth is 10 cm. The formula for the perimeter of a rectangle is P = 2(l + b), where P is the perimeter, l is the length, and b is the breadth. Plugging in the values, we get P = 2(20 + 10) = 2(30) = 60 cm.
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