Estimate 102.2x4.3
can someone solve

Round the first number to its nearest tens, and the second number to its nearest ones. After that, multiply 100 by 4 and you'll get 400. 

102.2 x 4.3 = 439.46 is the actual, calculated answer because you asked "can someone please solve" at the end of the question. 

 The correct option is (d) 60.

Step-by-step explanation:  We are given to find u * v, if the vectors u and v are defined as follows :

We know that

So, we have

Thus, the value of u * v is 60.

Option (d) is CORRECT.