Question

7. A square paper sheet has 10 1/2
cm long side. Find its perimeter.

Answer 1

Step-by-step explanation:

area = 10 1/2= 10.5 cm²

area of a square= a²

side of square from area = √a

√10.5 = 3.2cm

perimeter= 4×a

4× 3.2= 12.8 cm

hope it helps