jawab donk beserta caranya ya 4. 5.

no 4= L [] = p×l= 25cmX18cm= 450 cm^2
= L <>= d1Xd2/2 25cmX18/2= 225cm^2
L yg berbayang= 450cm^2-225cm^2=225cm^2

no 5 = L □= SxS= 28cm x 28cm= 784cm^2
=L○= phi x r x r = 22/7 x (28cm:2) x (28cm :2)
=22/7 x 14cm x 14 cm= 616cm^2
Luas yang berbayang = 784cm^2 X 616cm^2= 168cm^2
smoga membantu & maaf kl salah