These are VERY urgent. Her are some math questions.
The image goes with question 1.

1.) Find the volume of the figure in unit cubes.
A) 15
B) 50
C) 60
D) 72

2.)If the sides of a cube are 5 ft long, then its volume is...
A) 125 ft
B) 125 ft2
C) 125 ft3
D) 125 ft4

3.) If the sides of a cube are 4 inches long, then its volume is
A) 64 in
B) 64 in2
C) 64 in3
D) 64 in4

4.) A rectangular-prism-shaped toy box is 2 cm by 1 cm by 1 cm. A storage bin is packed with 18 of these toy boxes. There is no extra space in the bin.

What is the volume of the bin?
A) 2 cm3
B) 4 cm3
C) 18 cm3
D) 36 cm3

5.) Amaya bought a bookshelf at the store. It is made of 6 perfect cubes that measure 1 foot in length, 1 foot in height and 1 foot in width. What is the total volume of her bookshelf?
A) 1 cubic foot
B) 3 cubic feet
C) 6 cubic feet
D) 18 cubic feet

6.) Giselle has a jewelry box with two tiers. The top tier is 3 cm × 4 cm × 6 cm. The bottom tier's measurements are twice those of the top tier.
How much room does Giselle have for her jewelry in both tiers of her jewelry box?
A) 72 cubic cm
B) 144 cubic cm
C) 648 cubic cm
D) 864 cubic cm