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Add surface area of cone and cylinder and hemisphere (#5220)

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* Update area.py

* Update area.py

* Update area.py

* Update area.py

* Update area.py

* Update area.py

* Update area.py

* Update area.py
This commit is contained in:
Rohan R Bharadwaj 2021-10-14 16:53:18 +05:30 committed by GitHub
parent 9b4cb05ee5
commit d561de0bd9
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1 changed files with 83 additions and 1 deletions
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maths/area.py
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@ -42,6 +42,85 @@ def surface_area_sphere(radius: float) -> float:
return 4 * pi * radius ** 2
def surface_area_hemisphere(radius: float) -> float:
"""
Calculate the Surface Area of a Hemisphere.
Formula: 3 * pi * r^2
>>> surface_area_hemisphere(5)
235.61944901923448
>>> surface_area_hemisphere(1)
9.42477796076938
>>> surface_area_hemisphere(0)
0.0
>>> surface_area_hemisphere(1.1)
11.40398133253095
>>> surface_area_hemisphere(-1)
Traceback (most recent call last):
...
ValueError: surface_area_hemisphere() only accepts non-negative values
"""
if radius < 0:
raise ValueError("surface_area_hemisphere() only accepts non-negative values")
return 3 * pi * radius ** 2
def surface_area_cone(radius: float, height: float) -> float:
"""
Calculate the Surface Area of a Cone.
Wikipedia reference: https://en.wikipedia.org/wiki/Cone
Formula: pi * r * (r + (h ** 2 + r ** 2) ** 0.5)
>>> surface_area_cone(10, 24)
1130.9733552923256
>>> surface_area_cone(6, 8)
301.59289474462014
>>> surface_area_cone(-1, -2)
Traceback (most recent call last):
...
ValueError: surface_area_cone() only accepts non-negative values
>>> surface_area_cone(1, -2)
Traceback (most recent call last):
...
ValueError: surface_area_cone() only accepts non-negative values
>>> surface_area_cone(-1, 2)
Traceback (most recent call last):
...
ValueError: surface_area_cone() only accepts non-negative values
"""
if radius < 0 or height < 0:
raise ValueError("surface_area_cone() only accepts non-negative values")
return pi * radius * (radius + (height ** 2 + radius ** 2) ** 0.5)
def surface_area_cylinder(radius: float, height: float) -> float:
"""
Calculate the Surface Area of a Cylinder.
Wikipedia reference: https://en.wikipedia.org/wiki/Cylinder
Formula: 2 * pi * r * (h + r)
>>> surface_area_cylinder(7, 10)
747.6990515543707
>>> surface_area_cylinder(6, 8)
527.7875658030853
>>> surface_area_cylinder(-1, -2)
Traceback (most recent call last):
...
ValueError: surface_area_cylinder() only accepts non-negative values
>>> surface_area_cylinder(1, -2)
Traceback (most recent call last):
...
ValueError: surface_area_cylinder() only accepts non-negative values
>>> surface_area_cylinder(-1, 2)
Traceback (most recent call last):
...
ValueError: surface_area_cylinder() only accepts non-negative values
"""
if radius < 0 or height < 0:
raise ValueError("surface_area_cylinder() only accepts non-negative values")
return 2 * pi * radius * (height + radius)
def area_rectangle(length: float, width: float) -> float:
"""
Calculate the area of a rectangle.
@ -280,9 +359,12 @@ if __name__ == "__main__":
print(f"Triangle: {area_triangle(10, 10) = }")
print(f"Triangle: {area_triangle_three_sides(5, 12, 13) = }")
print(f"Parallelogram: {area_parallelogram(10, 20) = }")
print(f"Rhombus: {area_rhombus(10, 20) = }")
print(f"Trapezium: {area_trapezium(10, 20, 30) = }")
print(f"Circle: {area_circle(20) = }")
print("\nSurface Areas of various geometric shapes: \n")
print(f"Cube: {surface_area_cube(20) = }")
print(f"Sphere: {surface_area_sphere(20) = }")
print(f"Rhombus: {area_rhombus(10, 20) = }")
print(f"Hemisphere: {surface_area_hemisphere(20) = }")
print(f"Cone: {surface_area_cone(10, 20) = }")
print(f"Cylinder: {surface_area_cylinder(10, 20) = }")