A cube has side length a. The side lengths are decreased to 20% of their original size. Write an expression in simplest form for

Question

Maksim231197 [3]

3 years ago

6

A cube has side length a. The side lengths are decreased to 20% of their original size. Write an expression in simplest form for

the volume of the new cube in terms of a.

Mathematics

2 answers:

sergiy2304 [10] · Answer 1 · 2022-01-13T06:26:12+03:00

sergiy2304 [10]3 years ago

8 0

Volume of the original cube is a³ .
That's (a · a · a) .

If you decrease the sides to 20% of their original size,
then the new volume is (0.2a · 0.2a × 0.2a).

That's 0.008a³ or (0.2a)³ .

Take your choice. I can't decide which one is simpler.

CaHeK987 [17] · Answer 2 · 2022-01-13T07:30:40+03:00

CaHeK987 [17]3 years ago

6 0

20% is mean you have a cube of 80%
So 80%=0.8
That means the volume of the new cube is (0.8)3 I mean multiply 0,8x0.8x0.8 = 0.512a cubic unit