Plis tolong jawab pake cara nomer 30 sama 31 Plis moga dapet pahala Amin...

30. L total = L persegi panjang + L segitiga
= 25*8 + 4*8/2
= 200+16
= 216 cm²

31. L total = L persegi panjang + L segitiga
= 22*12 + 14*12/2
= 264+84
= 348 cm²

31.B1 L persegi panjang = p x l
                                        = 22 x 12
                                        = 264 cm2

B2 L segitiga = 1/2 x a x t
                      = 1/2 x 14 x 12
                      = 7 x 12
                      = 84 cm2

L = B1 + B2
   = 264 + 84
   = 348 cm2

Moga Membantu