ok here's the question, its one of the many questions im stuck on in a past paper ht gcse
a wax statue of a spaceman is on display in a museum...
wax models are to be sold in the museum shop..
the statue and the wax models are similar...
The height of the statue is 1.8m...
the height of the model is 15cm...
the area of the flag in the model is 10cm²...
A)calculate the area of the statue's flag..
the volume of the wax of the original statue is 172.8 litres.
B) calculate the volume of wax used to make the model.
give your answer in ml.
...thanks
2007-01-21 05:31:22 · 3 answers · asked by jenny 1 in Science & Mathematics ➔ Mathematics
A) the scale is 1 cm on the model is 0.12 m on the statue (1.8/15)
the scale is the same in x, y and z so if the area of the flag on the model is 10 cm^2 then it will be:
A = 10 * (0.12*0.12) = 0.144 m^2
B) V=172.8 l 1 liter = 1000 cm^3
V = 172 800 cm^3 = 0.1728 m^3
volume wax for model = 0.1728/(0.12)^3 = 100 cm^3
v.wax = 100cm^3 = 0.1 liter = 100ml
2007-01-21 05:56:36 · answer #1 · answered by Anonymous · 0⤊ 0⤋
A) calculate the area of the statue's flag.
(180/15)^2 = x/10
x = 1440 cm^2
B) calculate the volume of wax used to make the model.
give your answer in ml.
(180/15)^3 = x/172.8
x = 2.985984 x 10^11 ml
2007-01-21 13:51:32 · answer #2 · answered by sahsjing 7 · 0⤊ 0⤋
hi i think..... A)10cm2 B)172.8x1000=172800ml i hope i helped good luck bye bye
2007-01-21 13:51:26 · answer #3 · answered by Hello 2 · 0⤊ 0⤋