Задачите от 05.10.2025

#1

usd = float(input())
bgn = usd * 1.79549
print(bgn)

#2

from math import pi

radians = float(input())
# градус = радиан * 180 / π.
degrees = radians * 180 / pi
print(degrees)

#3

deposit = float(input())
months = int(input())
annual_interest_percent = float(input())
annual_interest = deposit * (annual_interest_percent / 100)
monthly_interest = annual_interest / 12
total_sum = deposit + (months * monthly_interest)
print(total_sum)

#4

number_of_pages_in_the_book = int(input())
pages_per_hour = int(input())
number_of_days = int(input())
needed_hours_per_whole_book = number_of_pages_in_the_book / pages_per_hour
hours_per_day = needed_hours_per_whole_book / number_of_days
print(int(hours_per_day))

#5

number_of_pens = int(input())
number_of_markers = int(input())
liters_of_detergent = int(input())
discount_percent = int(input())
price_per_pens = 5.80
price_per_markers = 7.20
price_per_detergent = 1.20
needed_sum = number_of_pens * price_per_pens \
             + number_of_markers * price_per_markers \
             + liters_of_detergent * price_per_detergent
needed_sum = needed_sum - (needed_sum * discount_percent / 100)
# needed_sum -= (needed_sum * discount_percent / 100)
print(needed_sum)


#6
quantity_of_nylon = int(input())
quantity_of_paint = int(input())
quantity_of_thinner = int(input())
hours = int(input())
nylon_price = 1.50
paint_price = 14.50
thinner_price = 5.00
bags_price = 0.40
materials_price = nylon_price * (quantity_of_nylon + 2) \
                  + paint_price * quantity_of_paint * 1.1 \
                  + thinner_price * quantity_of_thinner \
                  + bags_price
workers_payment = materials_price * 0.3 * hours  # * 10 / 100
total_sum = materials_price + workers_payment
print(total_sum)



#9

length = int(input())
width = int(input())
height = int(input())
percent_non_free_volume = float(input())
fish_tank_volume_in_centimeters = length * width * height
fish_tank_volume_in_liters = fish_tank_volume_in_centimeters * 0.001 # 1000 -> /10 /10 / 10    /1000 == * 0.001
percentage = 100 - percent_non_free_volume
needed_water_in_liters = fish_tank_volume_in_liters * percentage / 100
# percentage = percent_non_free_volume * 0.01
# needed_water_in_liters = fish_tank_volume_in_liters * (1 - percentage)
print(needed_water_in_liters)