Find the short side by tan 53 = opp/ adj = 400/x = 1.327 x= short side = 301.42
TWO short sides + TWO long sides = perimeter = 1403 ft
First book can be any of 3
next book can only be 1 of 2 (so as not to match
next book can only be 1 of 2
......
3 * 2^7 = 384 my guess !
Holy Guacamole ! I hope you didn't TYPE all of those ! I'd have at LEAST 10 C 3 typos !
Look at the front face.... it has 2 x 6 squares = 12 squares .....the BACK face (the one you can't see) has the same
so far 2 x 12 square
Now look at the side face. It has 2 x 4 squares = 8 squares .... the LEFT face (you can't see) does too...
add 2 x 8 squares
Now look at the TOP face. It has 6 x4 squares so does the BOTTOM face (you can't see)
add 2 * 6 x 4
Add up the Reds.....what do you get????
Ooops sorry misread the question....
My guess
you cannot have 0 then 9 x 8 numbers = 72 numbers
out of 10 p 3 = 720 720 - 72 = 648 combos
How many do YOU think it has?
You can just count the lines....or
TWO end triangles have 3 sides (edges) each 2 x 3
then the 'points' of the the two triangles are connected by edges 3
9 edges
You have TWO faces that are 12x 7 cm 2 * 12 x 7
ONE face that is 4 x 12 1 * 4 x 12
and TWO triangle endfaces : area = 1/2 bh 2 * 1/2 4 x 6
Add the reds for your answer...
I'll let you crunch the numbers for an answer
Depends on what the value of delta is .......
You'll just have to use a calculator to find cos (-3/2 degrees) = .999657
or if you need cos ( -3/2 radians) = .070737
