The area of a cross section paralell to the base is the base
the base is 4inches by 3 inches
area is 12 square inches
perimiter is 2(L+W)=2(4+3)=2(7)=14 inches
area is 12 square inches
perimiter is 14 inches
Answer:
77.2 milliroentgens per hour
Step-by-step explanation:
The first step is to find the constant of proportionality
I ∝ 1/d²
I = k/d²
62.5 = k/(3)²
k = 562.5
The second step is to calculate the intensity at 2.7 meters:
I = 562.5/d²
I = 562.5/(2.7)²
I = 77.2 milliroentgens per hour
The answer is 4 because 14-9=5 and 20/5=4
Answer:
20 feet
Step-by-step explanation:
In this case, you'd use pythagoras's theorem (a^2 + b^2 = c^2)
The hypotenuse is always = c, so you'd set up the equation like this:
16^2 + 12^2 = c^2, where you're solving for c (to find out the length of the kite string)
This equation simplifies to 256 + 144 = c^2
which further simplifies to 400 = c^2
to solve for c, we square root both sides so the c is isolated:

20 = c
so the length of the kite string is 20 feet
Sorry I'm not sure about this one