A cube has a side length of 5 centimeters. What is its surface area of the cube?

Mathematics

2 answers:

Arlecino [84]2 years ago

6 0

Answer:

A = 150cm²

Step-by-step explanation:

A=6a2=6·52=150cm²

balandron [24]2 years ago

5 0

Total surface area of the cube = 6.x^2.

= 6. (5)^2 cm^2

= 150cm^2. Answer.

You might be interested in

What 2 numbers add to get 2 and multiply to 4

rusak2 [61]

Factor 4
4=1 times 4
2 times 2
they don't add to 2
set up equation
x+y=2
xy=4

first equation, subtract x from both sides
y=2-x
subsitute for y
x(2-x)=4
distribute
2x-x^2=4
add x^2
2x=x^2+4
subtract 2x
0=x^2-2x+4
use quadratic formula which is
if you have ax^2+bx+c=0 then
x= $\frac{ -b+/-\sqrt{b^{2}-4ac} }{2a}$ so

1x^2-2x+4=0
a=1
b=-2
c=4
x= $\frac{ -(-2)+/-\sqrt{(-2)^{2}-4(1)(4)} }{2(1)}$
x= $\frac{ 2+/-\sqrt{4-16} }{2}$
x= $\frac{ 2+/-\sqrt{-12} }{2}$
we have $\sqrt{-12}$ and that doesn't give a real solution
therefor there are no real solutions
but if you want to solve fully
x= $\frac{ 2+/-2\sqrt{-3} }{2}$
i= $\sqrt{-1}$
x= $\frac{ 2+/-2i\sqrt{3} }{2}$
x= $1+/-i\sqrt{3}$
x= $1-i\sqrt{3}$ or x= $1+i\sqrt{3}$ (those are the 2 numbers)

6 0

3 years ago

Expand and Simplify: (5x-2)(3x+1)

harkovskaia [24]

Answer:

15x^2-x-2

Step-by-step explanation:

that's you're answer

5 0

2 years ago

2.4n + 1.2n - 0.12 = 7.08

Basile [38]