Answer:
60
Step-by-step explanation:
había multiplicado 4 y 15 espero que esto ayude
Answer:
a
Step-by-step explanation:
If the legs are length a and b and hyptonuse is c then
a²+b²=c²
so
if the legs are 20 and 21 and the hypotnuse is x then
20²+21²=x²
400+441=x²
841=x²
29=x
