All categories

3 years ago

What’s the volume of 1.) V=txrxrxh = 3.14 X 3 X 3 X 4 5 cm 12 cm

Mathematics

1 answer:

KonstantinChe [14]3 years ago

7 0

9514 1404 393

Answer:

A) (3 cm x 4 cm ÷ 2) x 3 cm

Step-by-step explanation:

The volume is the product of the area of the triangular bases and the distance between them.

Each right triangular base has a width of 3 cm and a height of 4 cm. Its area will be given by ...

A = (1/2)bh

A = (1/2)(3 cm)(4 cm) = (3 cm × 4 cm) ÷ 2

The distance between the triangular bases is marked at the left side of the diagram as 3 cm. So, the volume is ...

V = Bh

V = (3 cm × 4 cm ÷ 2) × 3 cm . . . . . matches choice A

There aren't any more steps. The answer starts by saying how the volume is computed. Then it shows how to find the numbers that go into that computation. Finally, it puts all that together in the form that is required to match an answer choice.

It might also be useful for you to draw the net to scale on a piece of paper, cut it out, and fold it along the lines to actually make a triangular prism. A little hands-on is always helpful in math. It only takes 5 or 10 minutes and can give you great insight into both prisms and nets.

You might be interested in

(X3)(x2) expand the exspression

miv72 [106K]

X^2 times X^3 is X^5.

4 0

3 years ago

Write the general equation for the circle that passes through the points: (1, 7) (8, 6) (7, -1)

Naddika [18.5K]

Answer:

$x^{2} +y^{2} +(-8)\times x+ (-6)\times y = 0$

Step-by-step explanation:

General equation of circle is $x^{2} +y^{2} +2\times g \times x+2\times f\times y+c = 0$ ---------------------(1)

This circle passes through the given three points, (1,7) , (8,6) and (7,-1).

Substitute (1,7) in (1),

1 + $7^{2} +2\times g\times 1 + 2\times f\times 7 +c$ =0

2g + 14f + c = -50 -------------(2)

Substitute (8,6) in (1),

$8^{2} + 6^{2} +2\times g \times 8+2\times f\times 6 +c=0$

16g + 12f + c = -100 -----------(3)

Substitute (7,-1) in (1),

$7^{2} + (-1)^{2} +2\times g \times 7+2\times f\times (-1) +c=0$

14g - 2f + c = -50 ---------------(4)

Solving (2),(3) amd (4) simultaneously,

g = -4

f = -3

c = 0

Equation of circle is

$x^{2} +y^{2} +(-8)\times x+ (-6)\times y = 0$

7 0

3 years ago

Write 9/12 as a sum of unit fractions

Marta_Voda [28]

Answer:

3/4

Step-by-step explanation:

3 0

3 years ago

Escribe una ecuación que represente la tabla.<br><br> por favor respondan ^^

jarptica [38.1K]

Un ecuacion es y = 12 + x.

6 0

3 years ago

Sam said the square root of a rational number must be a rational number. Jenna disagreed. She said that it is possible that the

ratelena [41]

Jenna is correct because the square root of a rational number can still be irrational.

Take for example the square root of 2. It is an irrational number than goes 1.41421...

If you multiply just the first however many digits of the result by itself, you will never end up with a perfect 2, because the square root is irrational.

4 0

3 years ago