Question

Persegi ,klilingnya 40,brapakah panjang diagonal sisinya...

Answer 1

Keliling persegi = 4s
4s = 40
s = 40 / 4
s = 10 cm

panjang diagonal sisi = √10² + 10²
= √100 + 100
= √200
= √100.√2
= 10√2 satuan panjang

Answer 2

Keliling 40cm.
sisi = 10cm
diagonal sisi = 
=√10kuadrat + 10kuadrat
=√100+100
=√200
=√2.100
=10√2
diagonal sisi = 10√2