00:01
High students in this question, a set of diameter in millimeter is being given and we need to find out the corresponding field area in millimeter square and diameter in terms of micrometer.
00:13
Now in the first part of the question, diameter d is taken to be a value of 1 .78 millimeter.
00:20
And here the field area can be calculated using the equation field area 8 to be equal to 5 into d square divided by 4.
00:29
Now by substituting the values in this equation, our equation changes as field area a to be equal to 3 .14 into 1 .78 square divided by 4, which on simplification gives the value of field area a to be equal to a value of 2 .49 millimeter square.
00:50
Next, we need to express the diameter in terms of micrometer, which can be calculated using the equation diameter d -d -dash to be equal to the initial diameter d in millimeter into a value of 10 raise to 3.
01:04
Now by substituting the value of d in this equation, our equation changes as d -dash to be equal to 1 .78 into 10 -rise -to -3, which aren't simplification gives the diameter d -d -d -d -dash to be equal to 1 ,780 micrometer.
01:21
Now in the second part of the question, the diameter is taken as d to be equal to 0 .45 millimeters.
01:29
And in this case the field area is calculated as area a to b equal to 3 .14 into 0 .45 square divided by 4...