Answer:
2142 inches^2
Step-by-step explanation:
parallelogram's area: base * height
so, 34*63 = 2142
Answer:
1400
Step-by-step explanation:
67 rounds to 70 because 7 is bigger than 5 so it rounds up. 23 rounds down since 3 is smaller than 5.
So, 70x20=1400
Answer:

Step-by-step explanation:
A triangular number is number that can be recomposed in the form of an equilateral triangle. Each triangular number is defined by:

Hence, evaluating n=100

Just ADD 1 +3 then subtract it from 1.4 inch
11/12 divided by 5/7 should be 0.02619047619 you can double check it though