Answer:
You started off broke
Step-by-step explanation:
18.74......+24.85=72.31
Answer:
24
Step-by-step explanation:
11+9+2+2=24 in
......
Answer:
B and C
Step-by-step explanation:
First, we need to get the left side equal to zero. Take away 25 from each side to get
.
We can use the quadratic equation of
to find the solutions.
Plug them in to get
.
Simplify.


or 
1 and -4
x = 1 and -4
The total surface area of a regular tetrahedron is calculated through the equation,
SA = (sqrt 3) x a²
Substituting the known value,
SA = (sqrt 3) x (10 cm)² = 173.20 cm²
Its volume is obtained by,
V = ((sqrt 2)/ 12) x a³
V = ((sqrt 2) / 12) x (10 cm)³ = 117.85 cm³
Thus, its surface area and volume are 173.20 cm² and 117.85 cm³, respectively.