Question

Find the perimeter of the square whose sides is 21 cm.
What time it will be:- 40 minutes before 12 noon.​

Answer 1

(1)perimeter of square=4(21)

                                   =84

(2)11:20

Answer 2

Step-by-step explanation:

(a) Square side-21cm

perimeter of square- 4xside

= 4×21 = 84cm

(b) 40 mins before 12 noon

that is 11.20 A.M