Answer:
315
Step-by-step explanation:
Area = Length x Width
Area = 21 x 15
Area = 315
s1+s2>s3 where s1 and s2 are the 2 smaller sides
Choice C is the only 1 that fits
7+13 >18
A.
38% = 38/100 = 0.38
A percentage is anything over 100