a CCTV camera is placed on the top of a 12 m high pole in such a way that traffic can be seen beyond 13 meter of line of sight of it . find the area of the green patch around the pole
Answers
Given : a CCTV camera is placed on the top of a 12 m high pole in such a way that traffic can be seen beyond 13 meter of line of sight of it .
To find : the area of the green patch around the pole
Solution:
Line of sight of camera = 13 m is hypotenuse
12 m high pole is perpendicular
Base = ?
Pythagoras' theorem: square on the hypotenuse of a right-angled triangle is equal to the sum of the squares of the other two perpendicular sides.
=> Base² = 13² - 12²
=> Base² = (13 + 12)(13 - 12)
⇒ Base² = (25)(1)
=> Base = 5
Area of triangle = (1/2) x Base x Height
= (1/2) * 5 * 12
= 30 m²
Learn More:
a triangle with base 24 cm and height 15 cm is cut out from a ...
brainly.in/question/13611745
area of an isosceles triangle is 48 CM square if the altitude ...
brainly.in/question/7320762