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The foot of a ladder is 6m from the base of an electric pole. The top of the ladder rest against the pole at a point 8m above the ground. How long is the ladder

A. 14m

B. 12m

C. 10m

D. 7m

**Comments**

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The diagram above is a right angle triangle, therefore pythagoras theorem can be used to find the length, L of the ladder

From pythagoras theorem, hyp^{2} = opp^{2} + adj^{2}

hyp, stands for hypotenus = L

opp, stands for opposite = 8

adj, stands for adjacent = 6

Length of the ladder, L = √8^{2} + 6^{2}

= √100

= 10m

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