Qualification > Math

MAth4 help

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Ghost Of Highbury:
okk...guys got the answer for 7.a and 7.b

i found the paper too lol

will take time to explain it clealry...
will post all the answers within 15 mins..

SGVaibhav:
doesnt ur b___ (oops) back pain for sitting in one place from 2.5 hours, that too 15 mins for instructions, so 2.75 hours?

Coco:
K so its all most 12:00pm n im lost
err year 2004 Q3b and c november
if i cud get help
god bless yall!!

Ghost Of Highbury:
hi coco
heres ur answer
b) part => first find the volume of water coming out from the pipe every secind..to do this u need to multiply 14 * 1.6 = 22.4

so this means that it fills 22.4 cm(3) in - 1 second
 so wat about                552920 (your answer to (a) part)

that will be 552920/22.4 = 6.85 hours or 6 hours 51 min

Ghost Of Highbury:
now your answer to the (c) part ..

the logic says this : after adding all the water in the tank to the pond the volume of the water in the pond will become equal to the volume of water in the tank = 552920
u need to also convert the 70m(2) to cm(2) ...i.e = 70 * 10(2)
soo u put it into equation
the volume of water in pond will be the surface area * the height of water
let the heigt be x
therefore 700000x=552920
therefore x = 552920/700000 = 0.789 cm = 7.89 mm

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