Answer: 20 ft
Step-by-step explanation:
Given: The length of rope tied to the top of a flag pole=29 ft
The distance between base of the pole and the point on ground where the rope is stacked= 21 ft
Let x be the height of flagpole.
Now, we can see the figure that the given situation represents a right triangle
Where longest side= 29
By Pythagoras theorem of right triangle, the square of the longest side is equal to the sum of the squares of the other two sides.
Hence, the height of flagpole = 20 ft.
A.
about 35 mi² to 45 mi²
B.
about 55 mi² to 65 mi²
C.
about 75 m² to 85 m²
Answer:
Option (b) is correct.
The approximate area of this park is about 55 mi² to 65 mi².
Step-by-step explanation:
Given : A grid with Each square on the grid represents 1 mi². and a park is constructed on it.
We have to determine the approximate area of this park.
We first find the area of grid and then subtract the uncovered square that are not covered in park area.
Length of square grid is 10 mi and breadth is 8 mi.
So, area of square grid = 10 × 8 = 80 mi²
Number of uncovered squares that are not covered in park area = 9 squares
So Area of uncovered squares = 9 mi²
Maximum area of park is (80 - 9) = 71 mi²
Also, Area of partially covered squares = 21 mi²
So, Minimum area of park is (80-30) = 50 mi²
Since, area of park lies in between 50 to 71
So , from given options only (b) satisfies the approximate area of this park.
Thus, the approximate area of this park is about 55 mi² to 65 mi².