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3 years ago

What is the surface area of This square pyramid?

Mathematics

1 answer:

frez [133]3 years ago

7 0

The very last answer given on the sheet of paper is your answer to the problem that you needed answered.

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In triangle PQR, PR = 23mm, QR = 39mm, and m<R = 163 degrees. Find the area of the triangle to the nearest tenth.

Schach [20]

Answer: 131.1287 square mm (approx)

Step-by-step explanation:

The area of a triangle,

$A=\frac{1}{2} \times s_1\times s_2\times sin \theta$

Where $s_1$ and $s_2$ are adjacent sides and $\theta$ is the include angle of these sides,

Here PR and QR are adjacent sides and ∠R is the included angle of these sides,

Thus, we can write,

$s_1 = PR= 23\text{ mm}$ , $s_2=QR=39\text{ mm}$ and $\theta = 163^{\circ}$ ,

Thus, the area of the triangle PQR,

$A=\frac{1}{2} \times 23\times 39\times sin163^{\circ}$

$A=\frac{262.257419136}{2} = 131.128709568\approx 131.1287\text{ square mm}$

5 0

3 years ago

Find an ordered pair (x, y) that is a solution to the equation

kotegsom [21]

Answer:

(0, 7) is an ordered pair solution to 3x + y = 7

Step-by-step explanation:

Given the equation 3x + y = 7, find a solution (ordered pair).

There are an infinite number of possible solutions. Let's focus on just one:

Let x = 0. Then y = 7, and (0, 7) is an ordered pair solution to 3x + y = 7

4 0

3 years ago

Hello there ! Can I have some help with this question? Thank you !

Luba_88 [7]

Answer:

About 6 hours.

Step-by-step explanation:

The cylinder has a diameter of 10 meters and a depth of 1.4 meters.

First, we can find the volume of the cylinder, given by the formula:

$V=\pi r^2h$

Where r is the radius and h is the height (or depth, in this case).

Since our diameter is 10, our radius is 5.

Therefore, the volume of the cylinder will be (using 3.14 as π):

$V=(3.14)(5)^2(1.4)=109.9\text{ meters} ^3$

Since water is pumped at a rate of 18 cubic meters per hour, it will take then:

$109.9/18=6.10\overline{5}\approx 6\text{ hours}$

So, it will take about 6 hours for the water to completely fill the pool.

7 0

3 years ago

ellle wanted to order candy online company a is offering 2 1/2 pounds of chocolate for $32.50,while company B is offering 2 1/2

Blababa [14]

Company b is of course offering the lower price because it cost less and it weigh the same.

7 0

3 years ago

Find (g*f)(3) f(x)= 7x + 8 g(x)= -1/x

Sophie [7]

Answer:

-21-24/x

Step-by-step explanation:

f(x) is a function on his own which is f(x)=7x+8

we multiple it with another function which is g(x)=-1/x

that gives us (g*f)=-7-8/x

then multiple it by 3 we have -21-24x

4 0

1 year ago