tolong dijawab pake cara ny ya, kk kk yg cantik dan ganteng cuman nomor 41) dan nomor 42)

Bangun Datar

No. 41
L arsiran = L 3/5 lingkaran
= 3/5 x π x r x r
= 3/5 x 22/7 x 7 x 7
= 3/5 x 22 x 7
= 462/5
= 92,4 cm^2 (B).

No. 42
L AFDE = L persegi panjang
= p x l
= DE x AE
= 8 x 6
= 48 cm^2

L BCDF = L trapesium
= 1/2 x jml sisi sejajar x t
= 1/2 x (DF + BC) x BF
= 1/2 x (6 + 10) x (15 - 8)
= 1/2 x 16 x 7
= 8 x 7
= 56 cm^2

L gabungan = L AFDE + L BCDF
= 48 + 56
= 104 cm^2 (D).

No. 43
K bangun = 2(9+5) + 12 + 4 + 14
= 2 x 14 + 12 + 4 + 14
= 28 + 30
= 58 cm

*semoga membantu. sukses selalu ^_^