Answer:
You answered it correctly :)
Step-by-step explanation:
We have an equation: ?/100= 48/60
Cross multiply:
60*?= 48*100
⇒ ?= 48*100/60= 80
48 is 80% of 60~
Answer:
h = 16 feet
Step-by-step explanation:
Pythagoras´ theorem establishes, that in a right triangle square of the hypothenuse (c²) is the sum of leg ( b²) plus leg (a²)
Then
c² = a² + b²
where according to the problem statement
(20)² = h² + (12)² ( h is the height of the flagpole )
h² = 400 - 144
h² = 256
h = √ 256
h = 16 feet
You can parameterize using spherical coordinates by
with and .
Take the normal vector to to be
(I use to avoid negative signs. The orientation of the normal vector doesn't matter for a scalar surface integral; you could just as easily use .)
Then
and the integral of over is
-15 why cause ehe had 30 dollars and he first soent 20 such equals to 10 then he soends 25 such equals to -15