kak tanya sekarang penting

(a)
L persegi = s x s = 3 cm x 3 cm = 9 cm2
L persegi panjang = p x l
= 10 cm x 4 cm = 40 cm2
L keseluruhan = 9 cm2 + 40 cm2 = 49 cm2
(b)
L persegi panjang = p x l = 12 cm x 8 cm = 96 cm2
L segitiga = 1/2 x a x t = 1/2 x 8 cm x 3 cm = 12 cm2
L keseluruhan = 96 cm2 + 12 cm2 = 108 cm2