Find the missing length in the given figure.

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answer is A.

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Detailed Solution

Concept- We should be aware that the perimeter of a polygon is equal to the sum of all of its sides. Let's say that the side CD has a length of x cm. Let's assume that the figure's perimeter is p. We'll now change the values in p with the ones provided. We will then have the value of x. We are aware that x will provide the CD's length. Additionally, we know that CD's length is equivalent to its missing length.
Before attempting to answer the question, it is important to understand that a polygon's perimeter is equal to the total of all of its sides.
Question Image

The diagram makes it evident that the circumference of ABCD is equal to 23 cm and that the lengths of the sides AB, BC, and AD are each equal to 5 cm, 4 cm, and 8 cm, respectively. Let's say that the side CD has a length of x cm. Let's assume that p is equal to the perimeter of ABCD.

We know that the circumference of ABCD is equal to 23 cm, and that the lengths of the sides AB, BC, and AD are each equal to 5 cm, 4 cm, and 8 cm, respectively.
Let's say that
Question Image

Substituting the value of AB,BC and AD in equation 1

Given the perimeter= 23cm

Hence, the correct answer is option 1.

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