if the length of each edge of a cube is doubled , how many times does its volume become?how many times does its surface area become?
Answers
Answered by
10
hiii!!!
here's ur answer...
let the Length of each edge of a cube be x.
volume of the cube = side³
= x*x*x
= x³
surface area of the cube = 6a²
= 6×x²
= 6x²
if the each edge of the cube is doubled then the length of each edge will be = x×2
= 2x
volume of the new cube = side³
= 2x×2x×2x
= 8x³
surface area of the new cube = 6a²6
= 6×2x²
= 12x²
no. of times for volume = 8x³/x³
= 8 times
no. of times for surface area = 12x²/6x²
= 12/6
= 2 times
hope this helps u...!
here's ur answer...
let the Length of each edge of a cube be x.
volume of the cube = side³
= x*x*x
= x³
surface area of the cube = 6a²
= 6×x²
= 6x²
if the each edge of the cube is doubled then the length of each edge will be = x×2
= 2x
volume of the new cube = side³
= 2x×2x×2x
= 8x³
surface area of the new cube = 6a²6
= 6×2x²
= 12x²
no. of times for volume = 8x³/x³
= 8 times
no. of times for surface area = 12x²/6x²
= 12/6
= 2 times
hope this helps u...!
Answered by
0
Answer:
Step-by-step explanation:Area of cross section of river= 2 x 45 = 90 m²
so, water flowing into the sea= area of cross section x rate of flowing water
= 90 x 3000
= 270000 m³
there water flowing per minute= 270000 / 60 = 4500 m³
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