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  1. The value of  
    (0.03)2 − (0.01)2
    		   is:
    0.03 − 0.01
    1. 0.02
    2. 0.004
    3. 0.4
    4. 0.04
Correct Option: D

(0.03)2 − (0.01)2
0.03 − 0.01

[Using a2 – b2 = (a + b) (a – b)]
=
(0.03 + 0.01)(0.03 − 0.01)
0.03 − 0.01

= 0.03 + 0.01 = 0.04
Second Method :
(0.03)2 − (0.01)2
0.03 − 0.01

= (0.03 + 0.01 = 0.04


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