Tolong bantu ya pakai cara kumpul besok

C.

1.luas ∆ + luas []
L∆= ½ a × t
→½9 × 25
→½225
→112.5

L[]=p × l
→40 × 15 = 600
L∆ + L[] = 112.5 + 600 = 712.5

2.luas lingkaran
→π r²
→3.14 × 20 × 20
→3.14 × 400
→314 × 4 = 1.256 cm

3.volume tabung = LA × T
→(22/7 ×14 × 14) × 35
→616 × 35=21.560 cm³

4.volume tabung = LA × T
→(½ × 38 ×10) × 60
→(½ × 380) × 60
→190 × 60 = 11.400 cm³