A rectangular block 12cm by 20cm by 36cm is cut into an exact number of equal cubes. Find the least possible number of cubes?	Choose the correct choice from the following:
A) 135
B) 10
C) 15
D) 40
E) 22
Volume of the block = 12*20*36= 
<gadget id="calculator">12*20*36</gadget>
<output>8_640</output>
8640 cm^3   Side of the largest cube= H.C.F of 12,20,36 = 4cm   Volume of the cube = 4*4*4= 
<gadget id="calculator">4*4*4</gadget>
<output>64</output>
64 cm^3   Number of cubes= 8640/64= 
<gadget id="calculator">8640/64</gadget>
<output>135</output>
135   135nswer is 135
<result>A</result>
A rectangular block 12cm by 20cm by 36cm is cut into an exact number of equal cubes. Find the least possible number of cubes?