Question 1037259
Hi there,
Question involves similar
triangles.
Unknown = Height of floodlight = 'x'
Distance from base of floodlight
to end of Martin's shadow = 4.5 + 1.4
= 5.9
Martin's height = 1.7
Length of Martin's shadow = 1.4
x/5.9 = 1.7/1.4
Cross multiply.
x = (1.7 * 5.9)/1.4  (* = times)
x = 7.16 m (2 decimal places)
This is the height of the floodlight.
Hope this helps :-)