IF it is
![\sqrt[12]{-10^{12} }](https://tex.z-dn.net/?f=%20%5Csqrt%5B12%5D%7B-10%5E%7B12%7D%20%7D%20)
then the roots would cancel out the power of 12. and the result would be -10
Answer: B and D
Step-by-step explanation:
Answer:
81 pi
Step-by-step explanation:
formula for area of a circle-pi times radius squared
18/2=9
9 squared 81
answer-81 pi
Answer:
(9+13)/2*10
=22/2*10
=11*10
=110
Step-by-step explanation:
First, we figure out the formula for areas of trapezoids is (a+b)/2*h.
Next, we plug in the numbers which will give use the equation:
22/2*10
Lastly, we solve:
11*10=110
Answer:
5
Step-by-step explanation:
area of rectangle = l(ength)×w(idth)
perimeter = 2×l + 2×w
diagonal = sqrt(l² + w²) (Pythagoras)
l×w = 12. => l = 12/w
2×l + 2×w = 14
2×12/w + 2×w =14
12/w + w = 7
12 + w² = 7w
w² - 7w + 12 = 0
=> (after a little thinking and trying : what 2 numbers multiply to 12 and add to -7 ? -3 and -4
=> (w-3)×(w-4) = 0
so, we get 2 solutions for w : 3 and 4
that gives us 2 solutions for l : 4 and 3
so, one is 3 and the other 4. it does not matter which is which. length 4 and width 3 produce the same diagonal as length 3 and width 4.
diagonal = sqrt(l² + w²) = sqrt(16 +9) = sqrt(25) = 5
