Answer:
the answer is D. 5.6
Step-by-step explanation:
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You need to start calculating from the innermost bracket and if there are no signs to do any operation then you need to multiply
Answer:

Step-by-step explanation:
Given that,
The base of a triangle = 2 km
The perpendicular height of the triangle = 
We need to find the value of x. It is the Hypotenuse of the triangle. It can be solved as :

So, the value of x is equal to
.
Answer:
B.
Step-by-step explanation:

You would divide the diameter in half to get the radius which is 4. And do the formula which is a=pie(r) squared. So the answer would be 50.24