Answer:
--- Curved Surface Area
--- Total Surface Area
Step-by-step explanation:
Given
Shape: Cylinder
-- height
--- radius
Solving (a): The curved surface area (CSA)
This is calculated as:

This gives:



Solving (b): The total surface area (TSA)
This is calculated as:

This gives:




Equilateral triangle has all sides equal.For triangles sum of interior angle=180degrees
since for equilateral all sides are equal then let x represent the sides



hence angle of equilateral triangle is 60
Answer:
A
Step-by-step explanation:
I am not sure but I think A