The surface area equation of a cylinder is:
2 * pi * r^2 + 2 * pi * r * h
Plug the values in:
2 * pi * 10^2 + 2 * pi * 10 * 10 is about 1256.64 units squared.
Answer: ∠DOB: 48°
Step-by-step explanation:
1. we need an equation first. the sum of all angles (108°, n°, 2n°) is equal to 180°. we can depict this with the equation: 108°+2n°+n°=180°
2. now we can solve for the missing variable, n.
108°+3n°=180° → subtract both sides by → 3n°=72° → divide both sides by 3 → n=24°
3. now that we know that n=24°, we can solve the value of ∠DOB. we can see that ∠DOB is 2n° which we just plug the number we got for n into the equation. 2*24=48° meaning ∠DOB is 48°
hope this heped! ♡
Brackets
Exponents
Division
Multiplication
Addition
Subtraction
4.8 - 0.2 x 11.5
4.8 - 2.3
2.5 is the answer
Answer:
Step-by-step explanation:
17 x 2 + (3x + 8x) =
34 + 11x
11x + 34
While linear<span> equations are always straight, </span>nonlinear<span> equations often feature curves.</span>
