Why did so many nations sent out voyages of Exploration at this time?

The nations sent voyages of exploration because they required reaching China and some other places in the Far East looking for new routes to avoid piracy.

Explanation:

answer; (d) i believe that the correct answer is americans finally ran out of ammunition;

254.34

step-by-step explanation:

the formula for area of a circle is given by

a = pi * r^2

a = pi * 9^2

a = 81*pi

using 3.14 as an approximation for pi

a = 3.14*81

a = 254.34