That's a 30-60-90 triangle, so the hypotenuse will always be 2x, the shorter leg will be x and the longer leg will be x√3. In this case, we are given the longer leg and we can deduce that x = 9. So, a = x = 9 and c = 2x = 18. Your answer is A, a = 9 yd, c = 18 yd.
<span>A man looks at the top of a building. He is 3 meters from the base and the building is 20 m tall. Find the distance from his point to the top of the building 'x'.</span>
Surface area is the area of all the sides added up. If you were to unfold all the areas and make it flat (2-D), area is
.
Volume would be cubed because it's 3-D
The area of a circle can be found using:
pi x r^2 (where r is the radius)
If the area of the circle is 255pi, then:
pi x r^2 = 255pi
Now we need to make r the subject:
r^2 = 255 (cancel the pi on both sides)
r = square root of 255
r = 15.96871942
Answer: 15.96871942 feet
Hope the answer helps :)
