Question

how to find one side of the figure when rest of the sides and the perimeter is given​

Answer 1

Answer:

7 cm.

Step-by-step explanation:

perimeter is the sum of all the sides.

so, let the sides be A B C D,

so the perimeter will be A+B+C+D

hence, 4 + 9 + 8 + x = 28

21 + x = 28

x = 28-21

= 7 cm ans.

Answer 2

answer :

hence, perimeter = sum of all sides.

let's be the unknown value as x

➟ 4 + 9 + 8 + x = 28 cm

➟ 4 + 17 + x = 28 cm

➟ 21 + x = 28 cm

➟ x = 28 - 21

➟ x = 7 cm