All categories

4 years ago

Please help me on this question

Mathematics

2 answers:

just olya [345]4 years ago

8 0

130.2 is the answer ✌130.2

AleksandrR [38]4 years ago

7 0

Answer:

The area can be expressed as: $\pi r^2+lw$ .

We have l=10, because 18-2(4)

We have w=8, as given.

Thus, the rectangle area is 80.

There are two semicircles, but they add to form a full circle, which makes things a lot easier. We have the circle area formula, and substituting the values gives us 50.24 as the circle volume

80+50.24=130.24.

Rounded to 1 decimal place that is 130.2

Hope this helps :)

You might be interested in

The length of a rectangle is represented by x+3 and the width by 2x-4. Write an expression for the area of this rectangle

madam [21]

Answer:

2x² +2x - 12

Step-by-step explanation:

area of rectangle = length X width

length = x+3

width = 2x - 4

Area = (x+3)(2x-4)

= x(2x-4) +3(2x-4)

= 2x² - 4x + 6x - 12

= 2x² +2x - 12

5 0

4 years ago

What is 6/4 in its simplst form

arlik [135]

It would be 3/2 i believe

3 0

2 years ago

Read 2 more answers

Find the slope and reduce p=(-8,3) q=(-6,2) slope of pq=-?/?

nirvana33 [79]

Answer is -1/2
slope = y2-y1/x2-x1 therefore 2-3/-6-(-8)= -1/2

4 0

4 years ago

A cylindrical paint can has a 6.5 inch inside diameter and is 7.75 inches high. It is being filled with paint at a rate of 120in

Zina [86]

Answer:

The rate of coating of surface is = 74 inch²/min

Step-by-step explanation:

diameter = 6.5-inch, height = 7.75-inch, rate of filling or dv/dt = 120 inch/min

Since the differential of an equation is basically its rate of change with respect to another variable.

Radius = d/2 = 6.5/2 = 3.25 inch, ds/dt = ? can also be understood as the rate at which the surface area of the cylindrical paint can is coated.

We know that the surface area of a cylinder = 2πrh + 2πr², this is equation 1

The volume for the cylinder = V = πr²h

dv/dt = πr² x dh/dt, where r is constant

120 = π x (3.25)² x dh/dt

Dh/dt = 120/π x (3.25)²

Now differentiate the surface area equation 1

ds/dt = 2 x π x r dh/dt + 0 , where r is constant

replace the value of dh/dt in the above equation of ds/dt

ds/ dt = 2 x π x 3.25 x (120/π x (3.25)²

ds/dt = 73.846 ≅ 74inch²/min

3 0

3 years ago

Which of the following equations have exactly one solution?

BARSIC [14]

Answer:

2, 3, 4 all have one solution.

Step-by-step explanation:

The first one has no solution.

The second one has a solution of -65/68.

The third one has a solution of 5.

The fourth one has a solution of 13/2.

Hope this helps!!

Let me know if I'm wrong...

3 0

4 years ago