a=10
b=20
h=5
area=0

# formulate of area trapezium
#tiong wei jie
#20DDT19F1077

#a is long base
#b is short base
#h is height 
area=(1/2)*(a+b)*h
print(area)


#convert to int format
c=37.11
k=0

k=int(c+273.15)
print(k)

#convert from celcius to farenheit
f=(9/5)*c+(32)
print(f)


#find the valume of cone
radius=2
height=7
pi=22/7

valumeofcone=(1/3)*pi*radius*radius*height
print(valumeofcone)