Answer:2 ft
Step-by-step explanation:
Area of circle = pi x r^2 = 4 pi
So r^2 = 4
r =2
Answer: The cost of 97.5 square feet of glass is $1828.13
( Incredible! Who has a window that size in their house?!?! )
Step-by-step explanation:
The Area (not perimeter) is 1/2 b*h
To find the height if this equilateral triangle we can use the Pythagorean Theorem c² = a² + b²
The side of the triangle is 15; that is the hypotenuse, c
The <u>b</u>ase of the right triangle we need is 7.5
The <u>a</u>ltitude (height) is what we need to calculate.
15² = a² + 7.5²
225 = a² + 56.25 Subtract 56.25 from both sides, then take the square root to find <u>a, that is h in the Area equation.</u>
√168.25 = 12.99 . Round to 13
Calculate the Area = 1/2 b*h
15*13/2 = 97.5 square feet.
Multiply by the cost per square foot: $18.75
97.5 * 18.75 = 1828.125 . Round to $1828.13
Answer:
225
Step-by-step explanation:
350 - 125 = 225
Hope this helps!
half an hour past 7, will be 7 plus 30 minutes then 7:30.
we could also come from the other way, and say is 30 minutes before 8 o'clock.
It'll be 40 bottle caps and just over 3 (3.15789 to be more exact)