Question

find the perimeter,area,and diagonal of a square whose each of side measure 8.5 m

Answer 1

perimeter=4×side
=4×8.5m
=26m
area=side×side
=8.5×8.5sq m
=70.25sq m
diagonal=8.5m
hope it helps you
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Answer 2

if side is a
then perimeter is =4a
area is =a²
diagonal is =√2a
now do it yourself........