Your answer is b and c :)
Answer:
1. Cellphone screen - plane
2. edge of a wall - line
3. grain of sell - point
4. strand of straight hair - line
5. Tip of a crayon -point
Step-by-step explanation:
1. Cellphone screen - It represents a 2 D plane surface. Hence it is a representation of a plane
2. edge of a wall - It is representation of a line
3. grain of sell - It is representation of a point
4. strand of straight hair - It is representation of a line
5. Tip of a crayon - It is representation of a point
Step-by-step explanation:
Given radius , r = 7cm
and height , h = 10cm
Surface Area of Cylinder
I will leave it in terms of pi as i am not sure how you want to leave your answer as.
OK now let's plug in the numbers.
We have t=15 minutes, T_0 = 80 C, Ts = 50, T(15)=60 C,
per minute
Answer: B