There are two telephone poles each 30m high, 80m apart and connected by a 100m long cable. Find the distance of the lowest point of cable to the ground?
A wire of length 11 m, is to be hung between two poles that are separated by a horizontal distance of 10 m. The two hanging points have the same elevation above the ground. Find Δh, the difference in elevation between each of the hanging points and the point half way between the two poles?
Of five consecutive multiples of three, the lowest is multiplied by two and four is added to give a number that is two thirds more than the average of the five numbers. What is the highest of the consecutive numbers?
A point inside a pentagon is connected to the midpoints of the sides of the pentagon and to a corner, as shown in the figure. The areas of the six regions are written in the figure.
What is the value of A – B?
