4*9 = 36 square cm
a tonne measures WEIGHT, whereas cm measures LENGTH, therefore you cant measure tonne to cm.
a ruler measures 15 cm .1 cm =10 mm .THis means , 1 standard ruler measures 150 mm.
A metre stick.
There are 100 cm by 300 cm
the measuring ruler that we use are the object which has length of 15 cm. 1 ruler =15 cm.
A pin head.
if ur asking what is the position of the object, you can use this formulas 1/f = 1/di + 1/do f: Focul length (14 cm) di: Image Distance (27 cm) do: Object distance (?) Object Distance ( do) = 4.69 cm
It is: 25 cm to 1 meter = 25/100 or 1 to 4
1 cm is approximately the width of a fingernail or the thickness of a 3/8 inch bolt.
A Dime!
1 metre