A rectangular box , which is madeof cardboard has a length of 5dm , a with of 3dm and a height of 2dm . How many cubes with side length of 1dm³ can be contained in this box ?

                                     hard ! hard ! hard !

A rectangular box , which is madeof cardboard has a length of 5dm , a with of 3dm and a height of 2dm . How many cubes with side length of 1dm³ can be contained in this box ?

                                     hard ! hard ! hard !

A rectangular box , which is madeof cardboard has a length of 5dm , a with of 3dm and a height of 2dm . How many cubes with side length of 1dm³ can be contained in this box ?

                                          Holy Truth be answered

The industrial park is built on a rectangular plot of land with a length of 5 km and a width of 2 km. How many square kilometers is the area of that industrial park?
(đây là bài toán đố)

Given a square with the length of one side is 8 cm and a isosceles triangle with the length of its base is 12 cm. If the area of the square is equal to the area of the isosceles triangle then what is the length of the height of the isosceles triangle, in cm? 

    a ,find the volume of the whole  figure in cm3 

b , we paint every side of the figure except for the bottom side .how many cubes  with side length 1 cm are there that have three faces painted ?

Pool A rectangular shape with a length 19,2m.Neu Rock, 22.5 width 414,72m cubic tank, the water level in the tank up to four-fifths of the height of the height of the tank be.Hoi how many meters?

A rectangular board has a circumference eight times the width of the card. Calculate the area of the cardboard, knowing the length of the cardboard is 99 cm