Question

please give me answer and explanation ​

Answer 1

Answer:

Q4: perimeter= 4s=3600, therefore, s=90, area= s*s= 90*90= 8100

Q5: perimeter= 480=4s, s= 120, area= s*s= 120*120= 14400

Q6: area= 4900=s*s, s=70, perimeter= 4s= 70*4= 280

Q7:  perimeter= 560m=4s, s= 140m, area= 140*140= 19600