2 years ago

An 18-foot ladder is leaning against a wall. The bottom of the ladder is 4.5 feet from the base of the wall.

Mathematics

1 answer:

lana66690 [7]2 years ago

3 0

Answer:

Step-by-step explanation:

use Pythagoras theorem

that is a²+b²=c²

so 4.5²+b²= 18²

rearrange to b²=18²-4.5²

so you get b=

$\sqrt{303.75}$

that is equal to 17.42842506

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