Explain why the exponents cannot be addded in the proududct 12 to the third power 11 to the third power

12 ^3  and 11^3   haven't got the same base  so the rules of exponents do not apply.

Bases have to be the same:-  for example 12^3 * 12*3  = 12 ^(3+3)  = 12^6

Answer: d. 39 cmin the diagram, the approximate length of the minor arc de is 39 centimetres.step-by-step explanation: the formula for the length of an arc in a circle is as displayed below.let the length of the minor arc de = xx = 2( pi )r × angle of sector / 360°from this, we will substitute the values given from the problem into the formula to obtain the length of the minor arc de.x = 2( pi )r × angle of sector / 360°r = radius = 25cmpi as an approximate value = 3.14angle of sector = 120°x = 2( 3.14 )( 25 ) × 120° / 360°x = 157 × 1 / 4x = 39.25x = 39 ( rounded to the nearest whole number as an approximate value )