A ladder 6.8m long is leaning against a wall, the foot of the ladder is 1.5m from the wall, find the height that the ladder reaches up the wall.
Pythagorus' Theorem: A2 + B2 = C2
Therefore... 1.52 + B2 = 6.82
= 2.25 + B2 = 46.24
B2 = 46.24 - 2.25 = 43.99
SqR of 43.99 = 6.63m [The height the ladder reaches up the wall].
TG
Related Maths GCSE answers
All answers ▸Show that the following 2 lines are parallel: l1: 3y=15x+17 l2: 7y+5=35x
Solve 7x + 6 > 1 + 2x
Suppose you are given a rectangle where the length is equal to 2x+4 and its width is equal to 3x-2. Assuming that the perimeter is equal to 54 cm, what's the value of x?
Solve the equation (2X + 3) / (X-4) - (2X - 8) / (2X + 1) = 1