Answer:
Step-by-step explanation:the answer is option A as 1 • 3 =3 and 3+4=7
2880 / 112 = 25.71 square inches per hr
The orientation of the ladder with the wall forms a right triangle. The ladder length is the hypotenuse of the triangle, the distance between the ladder at ground level and the base of the wall is the horizontal leg of the triangle, the height of the ladder is the vertical leg of the triangle.
Since we have a right triangle, we can use the Pythagorean theorem.
Let x = the height of the ladder
Write the equation for the Pythagorean theorem using the information.
x2 + 162 = 232
Solving for x, we have
x2 = 232 - 162
x = √(232 - 162)
x = √(529 - 256)
x = √(273)
x = 16.52
The ladder reaches 16.52 feet high.
Check the picture below.
bear in mind that, in an isosceles triangle, the two twin legs departing from the same vertex, will make an equal angle on the other end.