Answer:
Step-by-step explanation:
Answer:
44 in^2
Step-by-step explanation:
break it into 2 smaller rectangles and solve those.
Answer:
x = 4
y = 8
Step-by-step explanation:
this is a 30-60-90 triangle and the sides have a constant ratio
the side across from the 30°∡ is 1
the side across from the 60°∡ is √3
the side across from the 90°∡ is 2
In this problem we can find 'x' by setting up this proportion:
x/12 = /1
cross-multiply:
x = 12
x = 12/
since we don't like to leave radicals in the denominator, we can multiply both numerator and denominator by to get:
12 ÷ · (· = , which equals 3)
so we have 12/3, which is 4
The 'y' value will be twice the 30° side, so 8
Let the width be x, the length is then 3x-10
Area of a rectangle is length times width: x(3x-10)=77 => 3x^2-10x-77=0
Factor this quadratic equation: (x-7)(3x+11)=0 =.x=7 or x=-11/3
width cannot be negative, so the only answer is x=7
width is 7m, length is 11m
Answer:
the length of the park is 70m its width is 60m. The roads should have the same length so their area is 70m x 8m, =560m^2.
the cost of leveling the roads per m^2:
we have two roads so their total area is 560 x 2 = 1120m^2
now multiply this by Rs.15 to get the cost of leveling everything.
this is 1120 x 15
this gives Rs.16,800