9cm because 9cm*9cm=81cm²
Hope this helps :D
10 3/5 = 10 6/10 and 11 1/2 = 11 5/10
Answer:
supplementary
Step-by-step explanation:
the sum of two supplementary angles is 180°. They lie in a straight line.
Answer:
4
Step-by-step explanation:
The square root of a number is the same number multiplied by itself. In the case of 16, 4x4 equals 16. So 4 is being used twice making it the square root of 16.
Answer:
B
Step-by-step explanation:
Firstly, let’s say they are to fill a total of x liters, rate for big hose would be x/20 while for small hose it would be x/30.
Now if they are to work combined, total time would be
x/20 + x/30 = 5x/60 = x/12
Hence, it will take them 12 minutes