A metallic sheet is8m by 5m. Its thickness is 3 cm. If the metal weighs 3.6 per cm cubed, then its total weight is
A. 4,32 kg
B. 43.2kg
C.432kg
d.4 320kg
e. 43200kg
2007-08-31 02:07:54 · 6 answers · asked by Anonymous in Science & Mathematics ➔ Mathematics
use
density = mass/volume
Only use the formula with the same units.
What is the denisty of the metal: kg/cm^3 or g/cm^3 ???
2007-08-31 02:17:15 · answer #1 · answered by ? 3 · 0⤊ 0⤋
First we get the volume in cm^3.
8m = 800 cm
5m = 500 cm
Vol. = 800 x 500 x 3 = 1200000 cm^3
1cm^3 = 3.6 grams
1200000 x 3.6 = 4320000 grams
4320000 / 1000 = Ans. in kg = 4320 kg.
Therefore answer is definately D.
2007-08-31 09:20:30 · answer #2 · answered by Doctor Q 6 · 0⤊ 0⤋
V=L*W*H=800*500*3=120000000
1200000*3.6/1000=4320 kg
2007-08-31 09:30:05 · answer #3 · answered by Anonymous · 0⤊ 0⤋
Calculate the volume of the metal
Multiply by the density
Be careful to keep your units straight (the volume is NOT 8 X 5 X 3 for example)
2007-08-31 09:19:24 · answer #4 · answered by dogsafire 7 · 0⤊ 0⤋
first convert the length and width from m to cm
800 cm * 500 cm * 3 cm * 3.6 g/cm^3 * 1 kg/1000 g = 4320 kg
Answer is d
2007-08-31 09:20:50 · answer #5 · answered by mechnginear 5 · 0⤊ 0⤋
Wt of metal
= volume x specific gravity
= 8m x 5m x 3cm x sp.gr
= 800cm x 500cm x 3cm x 3.6g
= 4320000g
= 4320kg (d) is answer.
2007-08-31 09:29:27 · answer #6 · answered by sv 7 · 0⤊ 0⤋