CAN SOMEONE PLEASE EXPLAN FO ME WHATS WRONG WITH MY CODE WHEN EVEN I RUN IT IT GIVE ME THIS MASSAGE IM USING python BTW

Traceback (most recent call last):

File "../resource/asnlib/public/RUN.py", line 20, in

exec(source_code, dict())

File "", line 60, in

NameError: name 'total_rough_sod' is not defined )

from math import pi

length = float(input('Enter Course Length:')) width = float(input('Enter Course Width:'))

def calculate_smooth_sod(width): grean_area_raduis= (width/2)/2 total_smooth_sod=2*pi*(grean_area_raduis**2) return total_smooth_sod

def calculate_sand_trap_area(width): sand_trap_radius=(width/3)/2 sand_trap_area=pi*(sand_trap_radius**2) return sand_trap_area

def calculate_rough_sod(length, width, total_smooth_sod, sand_trap_area): total_area= length*width total_rough_sod= total_area-total_smooth_sod-sand_trap_area return total_rough_sod

def calculate_bricks(width): length_of_brick_wall= pi*(width*3/6) number_of_bricks= length_of_brick_wall*3 return number_of_bricks

def calculate_sand(width): width_in_ft= width*3 sand_trap_radius= width_in_ft/6 sand_trap_area=pi*(sand_trap_radius**2) total_sand=(sand_trap_area*100)/2000 return total_sand

def calculate_bushes(length, width): perimeter=2*(length+width) total_bushes=perimeter-2 return total_bushes

def calculate_total_time(total_rough_sod, total_smooth_sod): total_time=(total_rough_sod*0.5)+(total_smooth_sod) return total_time

60-print("Total square yards of rough sod: " + str(total_rough_sod)) 61-print("Total square yards of smooth sod: " + str(total_smooth_sod)) 62-print("Tons of sand: " + str(total_sand)) 63-print("Number of retaining wall bricks: " + str(number_of_bricks)) 64-print("Number of bushes: " + str(total_bushes)) 65-print("Total mowing time (mins): " + str(total_time))