Arectangular tray has length 60 cm, width 40 cm and depth 2 cm.
it is full of water.
the water is poured into an empty cylinder of diameter 8 cm.
calculate the depth, in cm, of water in the cylinder.
give your answer correct to 3 significant figures.

Step-by-step explanation:

V tray = 60 x 40 x 2 cm ³ = 4800 cm ³

4800 = π r ² h

4800 = 16 π h

h = 4800 / ( 16 π ) cm

h = 95.5 cm is depth of water.

81 seats

step-by-step explanation:

if you multiply 0.65 times 125 then you get 81.5 seats. well since you can't have half of a seat you have to round down and get 81 seats in the no children zones. that leave 44 seats outside of the no children zone.

you didn't post any answer choices, so its not 100% clear what your teacher is looking for

however, log(15/7) is equivalent to log(15) - log(7)

i'm using the rule log(x/y) = log(x) - log(y)