Question

please tell me answers for question numbers 12,13,and 15​

Answer 1

Answer:

Given below (4th is construction. Pls ask someone else for it.)

Step-by-step explanation:

12.    Since, all sides of square are equal.

        Hence, Side1=Side2=Side3=Side4.

        Perimeter of Square= Sum of all sides

                                          =42+42+42+42

                                          =168cm.

13.     (-40) + (-93) - (-11) - (-13)

         -40 - 93 + 11 + 13

         =  -109.

Answer 2

14 perimeter =4*s
Perimeter =42*4
Perimeter =168 m

13
-40-93+11+13
-133+24
-109

Area of tiles=l*b
Area = 12*5
Area=60 cm2
Area of plot=l*b
Area=70*30
Area=210 cm2
Number of tiles= 210/60
Number of tiles = 3.5