Help please been stuck on this for a week.

Mathematics

1 answer:

Anettt [7]4 years ago

6 0

They give the formula as:
Surface Area = (2 • π • r²) + (2 • π • r • height)
However the 2*PI*r^2 part of the formula is used to calculate the 2 "ends" of a cylinder. Since the problem states that you are NOT to count any of surface area of the "ends" then you only need the (2 • π • r • height) part of the formula.
So, r = 3 inches and height = 8 * 3 inches, the side area equals
2 * PI * r * height
2 * 3.14159 * 3 * 24 =

 452.39 cubic inches which is the lateral area.

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Three square flower beds with side of 2m are dug in a rectangular piece of land whose length is 5.2 m and width is 4.8 m. What i

belka [17]

Answer: 12.96 m²

Step-by-step explanation:

The area of the piece of land that the flower beds were dug in is:

= Length * width

= 5.2 * 4.8

= 24.96 m²

The flower beds were 3 in number and all had the shape of a square.

Their area is:

= 3 * (Length * width)

= 3 * ( 2 * 2)

= 3 * 4

= 12 m² for all three flower beds

Remaining land:

= 24.96 - 12

= 12.96 m²

8 0

3 years ago

ILL GIVE BRAINIEST IF SOMEONE CAN HELP

shusha [124]

Hope this helps !!! Have a good one

6 0

3 years ago

2) Let () = x − 4 and () = x2 − 10. Find the solution to the equation () = () by sketching the functions. A) 2 and 3 B) −2 and 3

bezimeni [28]

We have been given a system of equations. $f(x)=x-4$ and $g(x)=x^2-10$ . We are asked to find the solution of the equation $f(x)=g(x)$ by sketching the functions.

We can see that f(x) is a linear function in slope-intercept form. The slope of f(x) is 1 and y-intercept at point $(0,-4)$ .

We can also see that g(x) is a quadratic function. The function g(x) is an upward opening parabola, whose vertex is at point $(0,-10)$ .

Upon graphing both equations, we will get our required graph as shown in the attachment.

The solution of $f(x)=g(x)$ will be the x-coordinates of points, where both functions will intersect.

We can see that both functions are intersecting at $x=-2\text{ and }3$ , therefore, $-2\text{ and }3$ are the solutions of $f(x)=g(x)$ and option B is the correct choice.