Question

Can someone help?

The info is above.
The questions are below:

21(a) Circle the height of the cylinder.
8cm
10.5cm
13cm
21cm

21(b) Work our the rate of increase of the depth of the water between 6 seconds and 11 seconds.

State the units of your answer.

Answer 1

21(a) 8 cm

21(b) 1.6 cm/sec

Explanation:

21(a)

21 cm = 13 cm = 8 cm

21(b)

Increase in depth from 6 sec to 11 sec: 8 cm

Time from 6 sec to 11 sec: 11 sec - 6 sec = 5 sec

Rate = (8 cm)/(5 sec) = 1.6 cm/sec