A. The figure is a triangular pyramid. You can findits surface area by adding up the area of the three faces of the triangle and the area of the base. A derived formula also is used where the SA is equal to 12 times the perimeter of base times the slant height, added to that is the area of the base. The area of the square base is s^2. Its perimeter is 4s.
SA of Pyramid = 12*P*l + s^2
SA of Pyramid = 12*4s*l + 16^2
SA of Pyramid = 12*4(16)*(17) + (16)^2
SA of Pyramid = 11,008 square inches
b.) The formula for the SA of a cone is:
SA of cone = πr[r+√(h^2+r^2)]
SA of cone = π(3)[(3+√(8^2+3^2)]
SA of cone = 108.8 square inches
The answer would be 8746 ft :)
Answer:
3/4
Step-by-step explanation:
There are 60 seconds in one minute
3 1/2 minutes = 3 1/2 * 60 = 210 seconds , Answer
Answer:
x = 1
Step-by-step explanation:
So first we have to identify what f(x) and g(x) equals. We can do this by looking at their y-intercept and determining their slope, by its rise/run
the two equations are:
y = -2x - 1
y = x + 2
now we solve
f(x) + g(x) = 0
substitute
-2x - 1 + x + 2 = 0
simplify
-x + 1 = 0
divide by -1
x - 1 = 0
add one on both sides
x = 1
