estimeate the area of Virginia to the nearest mile

Question

The formula
A = [s(s − a)(s − b)(s − c)]1/2
gives the area of a triangle with sides of length a, b, and c, where s is one-half of the perimeter. Estimate the area of Virginia (to the nearest square mile) using the data given below.

 

A =        mi2

 

 

the first side is 370 miles, the second side is 220 miles and the third side is 430 miles

Answer 1

Sha,

 

The sides are 370, 220 and 430 miles

 

So perimeter = 370 + 220 + 430 = 1020 miles

 

S = P/2 = 510 miles

 

Area = 510*(510-370)(510-220)(510-430)^1/2 = 40700 sq miles