tolong dengan caranya ya

L persegi
= s x s
= 10 x 10
= 100 cm²

d² = 10² + 10²
d² = 100 + 100
d² = 200
d = √200
d = 10√2 cm

r = 10√2/2
r = 5√2 cm

L = phi r²
L = 3,14 x 5√2²
L = 3,14 x 25√4
L = 3,14 x 25 x 2
L = 3,14 x 50
L = 157 cm²

L yg di arsir
= 157 - 100
= 57 cm²