Question

A four sided figure with a perimeter of 120 cm has a width which is 30 cm less than twice its length .What kind of quadrilateral is this ?Justify your answer.

Answer 1

Answer:

Find the perimeter of the quadrilateral with sides 5 cm, 7 cm, 9 cm and 11 cm.

Solution:

The formula to find the perimeter of the quadrilateral = sum of the length of all the four sides.

Here the lengths of all the four sides are 5 cm, 7 cm, 9 cm and 11 cm.

Therefore, perimeter of quadrilateral = 5 cm + 7 cm + 9 cm + 11 cm

= 32 cm

2. The perimeter of the quadrilateral is 50 cm and the lengths of three sides are 9 cm, 13 cm and 17 cm. Find the missing side of the quadrilateral.

Solution:

Let the missing side of the quadrilateral = x

Perimeter of the quadrilateral = 50 cm