How to do this question?
2 Answers
May 18, 2018
See below.
Explanation:
Distance
Distance
Cost of laying cable from
Cost of laying cable from
Total cost of laying cable:
If the cost of laying the cable is 10000C:
Then:
Dividing by 10000:
Rearranging:
May 18, 2018
Explanation:
#"we require to find the total length of cable required"#
#"using "color(blue)"Pythagoras' theorem "" in "triangleXYA#
#XA^2=XY^2+YA^2#
#rArrXA=sqrt(10^2+p^2)=sqrt(100+p^2)#
#"cost of XA "=wsqrt(100+p^2)#
#AZ=YZ-YA=20-p#
#rArrC=20-p+wsqrt(100+p^2)#