201 = 11

40523 = 13

24680975012 = 432

101804102 = ?

You’re repairing a large rectangular aquarium. the final step is to cover the glass with a protective film. the front and back of the aquarium measure 4 meters by 2 meters, and the sides of the aquarium measure 3 meters by 2 meters. how many square meters of protective film do you need? ( )

Jenisey has $24 to spend on seven pencils. after buying them she had $10. how much did each pencil cost.?

I'm confused on this could anyone me and show me what i need to do to solve it.