A Region of land 50meters by 40meters is to cross diagonally by a road 15meters wide. What is the roads area?
we start by calculating the value of x
"15^2=x^2+x^2"
"225=2x^2"
"225\/2=x^2"
"112.5=x^2"
"\\sqrt{112.5}= \\sqrt{x^2}"
"10.61=x"
length x= 10.61m
next we find the diagonal D
length = "50-x=50-10.61=39.39"
width ="40-x=40-10.61=29.39"
D="\\sqrt{39.39^2+29.39^2}"
D="49.15"
area of the road ="15*D"
="15*49.15"
="737.25m^2"
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