Need with these volume of prisms. quite easy but i don't get them haha

(a) 80cm³ (b) 4618.14 m³

Question A

The figure is made up of a cubiod and a triangular prism.
1. Find the volume of the cubiod.
2. Find the volume of the triangular prism.
3. Add the two volume up to find the volume of the figure


Area of the cuboid

Volume = Length x Width x Height
Volume = 4 x 5 x 2
Volume = 40 cm³


Area of the triangular prism

Height = 6 - 2 = 4cm

Volume = 1/2 x base x height x Length
Volume = 1/2 x 4 x 4 x 5
Volume = 40 cm³


Volume of the figure

40 + 40 = 80 cm³


100 cm³


Question B
Volume of the cylinder  = πr²h
Volume of the cylinder = π x (14)² x 7.5
Volume of the cylinder  = 4618.14 m³


4618.14 m³

2,4,5,8,10 are divisible by 40