The perimeter of a rectangular plot of land whose length is (2x+5) and width is (x-10) is 80cm. Find the i)value of x
ii) area
iii)cost of weeding the plot at GHc 0.24 per m²​

P.=2(2x+5)+2(x-10)=80cm

6x-10=80

x=90/6=15cm

Area= L*W= 35*5=175 squared cm= 0.0175 squared m

Cost= 0.24 * 0.0175 = GHc 0.0042

answer

d. 10

explanation

the distance from point y to wx is the height of the triangle.

using pythagoras theorem,

group similar terms to get,

this implies that,

take positive square root of both sides to get,

this implies that,