I have a problem that gives me that, if it does not work, the block under the if will not be activated

print ("Hello Welcome to the Area Calculator")
print ("We can calculate the area of ‚Äč‚ÄčTriabulo1 square2 circle4")
What = input ("Calculate Quina Area Vols?")
if that == 1:
a = input (& # 39; I specified the measure of the base of the triangle: & # 39;
b = input (& # 39; say the height of the same triangle: & # 39;
total = (int (a) * int (b) / 2)
print (& # 39; the result is: & # 39;
print (total)