Keliling persegi yang panjang diagonalnya 9√2cm adalah​

Jawab:

Diagonal = sisi✓2

9✓2 = sisi ✓2

Sisi = 9 cm

d = 9√2 cm

s√2 = 9√2

s = 9 cm

keliling

= 4 x s

= 4 x 9 cm

= 36 cm