The ports of Surat and Hoogly decayed in which centuary​

In the last years of the seventeenth century, the gross value of trade that passed through Surat had been ` 16 million. By the 1740s, it had slumped to ` 3 million. With the passage of time, Surat and Hoogly decayed, while Bombay (Mumbai) and Calcutta (Kolkata) grew.

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

c. troops marched forward in close formation against newer, more accurate weapons