Draw a circle and label the parts. Briefly explain the parts of the circle. Copy and complete the table below: A straight ladder 10 meters long is placed against a wall with its lower end 6 meters away from the wall. How high up the wall does it reach? Solve for n in the diagram below:

For a class interval $a-b$, the lower class boundary is $a - 0.5$ and the upper class boundary is $b + 0.5$.

Class Width = Upper Class Boundary - Lower Class Boundary.

Class Midpoint = $\frac{\text{Lower Class Limit} + \text{Upper Class Limit}}{2}$.

2. A straight ladder 10 meters long is placed against a wall with its lower end 6 meters away from the wall. How high up the wall does it reach?

This problem forms a right-angled triangle.
Length of the ladder (hypotenuse, $c$) $= 10$ m.
Distance from the wall (base, $b$) $= 6$ m.
Height up the wall (height, $a$) is unknown.

The Pythagorean theorem states $a^2 + b^2 = c^2$.

The height the ladder reaches up the wall is 8 meters.

3. Solve for n in the diagram below:

Angles on a straight line sum to $180^\circ$.

The value of $n$ is $\frac{53}{3}$ or approximately 17.67.