Answer:
644
Step-by-step explanation:
SA=[2×(5×20 + 5×6 + 20×6)] +
[2×(4×12 + 4×6 + 12×6)] -
[ 2× 12×6]
= [2×(250)]+[2×(144)] - [144]
= 500+288-144
= 644 cm²
Answer:
165/32= 5 5/32 = 5.15625
Step-by-step explanation:
it is already simplflied
C. Is the answer. ......................
Well, if one face has an area of 81 square centimeters, then that means that each side of the square is 9 centimeters. The formula to find volume is
![l^3](https://tex.z-dn.net/?f=l%5E3)
, so 9^3 = 729.
In short, your answer would just be 729 centimeters![^3](https://tex.z-dn.net/?f=%5E3)
Hope this helped!!!
Answer:
3
Step-by-step explanation:
2x + 2y = 4
dividing both sides by 2,we get
x + y = 4,which is the same line A
so this set of equations has infinitely many solutions as they intersect each other at infinite points i.e they overlap eachother