Question

the perimeter of a figure is the sum of the lengths of all its sides. The perimeter of the given figure is 28cm.Find the length of the unknown side​

Answer 1

Answer:

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Answer 2

Answer:

so the length of 4th side is 12 cm 45mm

Step-by-step explanation:

let the unknown side be x

sum of all sides = perimeter

10 cm 4 mm+5cm 6mm+ 45mm + x = 28 cm

15 cm 55 mm + x = 28cm

x = 28.00- 15.55

x= 12.45

x= 12 cm 45mm

so the length of 4th side is 12 cm 45mm

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