All categories

4 years ago

#3 HELP PLEASE!! Also pls explain how u did it!!

Mathematics

1 answer:

Andreyy894 years ago

8 0

Ok... to find the total surface area we have to realize a couple of things. First it's a triangular prism so we are dealing with 5 sides. Also the triangular sides are going to be congruent so all the side Lengths will also be congruent. The rectangular sides of the prism will have congruence as well. Lastly we have to know that to find the total surface area, you have to find the area of each side and add them together....

First the triangles. The area formula for a triangle is a = 1/2 base × height.
Since they are right triangles, the base and height are the legs of the right angle, so...

a = 1/2 (8 × 15)
a = 4 × 15 = 60 in^2

Don't forget we have 2 of them so surface area of both is 120 in^2.

Now the rectangles...

a = base × height

1) a= 13 × 8 = 104 in^2

2) a = 15 × 13 = 195 in^2

3) a = 13 × 17 = 221 in ^2

Now add them all up...

104 + 195 + 221 + 120 =

640 in^2 total surface area

You might be interested in

Para la construcción de una cabaña en el campo don Samuel compró 7,943 clavos hasta el momento ha utilizado 473 ¿cuantos clavos

Kazeer [188]

Restando la cantidad utilizada de el total, tiene-se que 7470 clavos le quedan.

----------------------

En total, para la construcción, Samuel compró 7,943 clavos.
De toda esta cantidad, 473 fueron utilizadas.
La cantidad de clavos que le quedan es la subtracción da cantidad total por la utilizada, o sea, 7943 restado de 473.

$7943 - 473 = 7470$

Le quedan 7470 clavos.

Un problema similar es dado en brainly.com/question/24554492

5 0

3 years ago

Help. Best answer I will mark as brainliest

mixas84 [53]

12:02 PM is the answer

4 0

4 years ago

Read 2 more answers

Amadahy wants to buy a card and two gifts for her friend. Cards cost 3.49 each and gifts cost $10.63 each. Amadahy has a 20$ bil

BartSMP [9]

Answer:

Given that Amadahy has a $ 20 bill, and wants to buy a card and two gifts for her friend, and knowing that each card costs $ 3.49 and each gift costs $ 10.63, the total cost of the 3 items would be $ 24.75 (10.63 x 2 + 3.49 ).

Therefore, she will not be able to purchase the products she wants, since she will need $ 4.75 to reach the amount necessary for it (24.75 - 20).

7 0

3 years ago

part 3. Find the value of the trig function indicated, use Pythagorean theorem to find the third side if you need it.

Nat2105 [25]

Answer: $\bold{9)\ \sin \theta=\dfrac{1}{3}\qquad 10)\ \sin \theta = \dfrac{4}{5}\qquad 11)\ \cos \theta = \dfrac{\sqrt{11}}{6}\qquad 12)\ \tan \theta = \dfrac{17\sqrt2}{26}}$

Step-by-step explanation:

Pythagorean Theorem is: a² + b² = c² , where "c" is the hypotenuse

$9)\ \sin \theta=\dfrac{\text{side opposite of}\ \theta}{\text{hypotenuse of triangle}}=\dfrac{4}{12}\quad \rightarrow \large\boxed{\dfrac{1}{3}}$

Note: 4² + (8√2)² = hypotenuse² → hypotenuse = 12

$10)\ \sin \theta=\dfrac{\text{side opposite of}\ \theta}{\text{hypotenuse of triangle}}=\dfrac{16}{20}\quad \rightarrow \large\boxed{\dfrac{4}{5}}$

Note: 12² + opposite² = 20² → opposite = 16

$11)\ \cos \theta=\dfrac{\text{side adjacent to}\ \theta}{\text{hypotenuse of triangle}}=\dfrac{\sqrt{11}}{6}\quad =\large\boxed{\dfrac{\sqrt{11}}{6}}$

Note: adjacent² + 5² = 6² → adjacent = √11

$12)\ \tan \theta=\dfrac{\text{side opposite of}\ \theta}{\text{side adjacent to}\ \theta}=\dfrac{17}{13\sqrt2}\quad =\large\boxed{\dfrac{17\sqrt2}{26}}$

Note: adjacent² + 7² = (13√2)² → adjacent = 17

5 0

3 years ago

What is 1+1? Very urgent

forsale [732]

Answer:

Step-by-step explanation:

anything plus 1 equals 62.

Hope this helps. Have a nice day you amazing bean child.

( jk jk. It's 2)

8 0

3 years ago