Answer:
7
Step-by-step explanation:
Its 7 im sorry if im wrong
Answer:
<u><em>6</em></u> rolls because the total perimeter is 102 ft and five rolls is only 100 feet. So she needs <em><u>6</u></em> rolls.
Step-by-step explanation:
to find perimeter, add up all the side lengths.
so 15*4 (it's easier than 15+15+15...)
60 ft.
now we have to use Pythagorean's Theorum to find corner to corner.
so
we have a and b
do the math...
225+225= 450
square root of 450=
21.213
double that because it's used twice (corner to corner and corner to corner)
42.426
now add it all up
42.426 + 60 = 102.426
we can round
102
20*5 = 100
so she needs 6
MY ORIGINAL ERROR WAS 5, BUT 5 TIMES 20 IS ONLY 80, SO THEREFORE 6 IS REQUIRED SO THERE IS ENOUGH TO COVER 102.
No. 26,341 is not evenly divisible by 3 .
Here's the trick you can use to decide this
just by looking at a big number:
==> If a number is divisible by 3, then the
sum of its digits is divisible by 3.
I've never taken the trouble to figure out why this works,
but it does work. I didn't make it up. It's widely known.
So let's look at 26,341 .
The sum of the digits is (2 + 6 + 3 + 4 + 1) = 16 .
16 is not divisible by 3 , so 26,341 is not divisible by 3 .
Is that cool or what !
The answer would be 105, it's square root is approximately 10.2469 <span />