Question

if the perimeter of a square is 40 cm find the length of a diagonal and its area please give the full explanation step by step ​

Answer 1

Answer:pls mark me as the brainliest answer

14.14 cm

Step-by-step explanation:

P=40 cm Side = 10 cm     As S=P/4 (in square) Area = side×side             =10×10               =100cm^2 Diagonal => 10^2 +10^2=diagonal^2 (Pythagoras theorem) Diagonal =root (100 +100) Diagonal = root 200    Ans.......  14.14 cm

Answer 2

Answer:

10cm length

Step-by-step explanation:

perimeter of square is =4a

where(a is side of square)