Question

In a moving car, there are 6 and a half rotations of a wheel per second. How many right angles did the wheel rotate through in one second? [3 MARKS]

Answer 1

Steps: 2 Marks
Answer: 1 Mark

Given that:
The wheel rotates 6 and a half times in one second.
We know that in one revolution there are 4 right angles.
$\therefore$ In 6 revolutions, the number of right angles = 6$\times$4 = 24
$\therefore$ In half revolution, the number of right angles = $\frac{1}{2}$$\times 4$ = 2
The total number of right angles = 24 + 2 = 26.
The wheel went through 26 right angles.