Answer:
681ft^2
Step-by-step explanation:
Start by finding the area of the whole thing with the missing triangle:
33 x 22 = 726
Then find the area of the triangle. You can do this by first finding out the side lengths of the triangle:
33 - 24 = 9 and 22 - 12 = 10
Then multiply both sides and divide by two because it is a triangle:
10 x 9 = 90 90/2 = 45
Then subtract the area of the triangle from the rectangle:
726 - 45 = 681
First you have all ten books, but then every time after, you loose one because you can't put the same book in the group twice.
10 * 9 * 8 * 7 = 5040 groups
I believe the answer is 11ft
Answer:
2²×3³
Step-by-step explanation:
162 can we shown as:
81*2=162 as 2 is prime we leave it out and focus of 81:
18*3=81 we leave out 3:
3*6=18 we leave out 3 again:
3*2=6
so our answer is 2*2*3*3*3 which in index form is 2²*3³ as there are two 2s and three 3s.
