All categories

3 years ago

The surface area of a triangular pyramid is 408 m2.

Mathematics

2 answers:

adoni [48]3 years ago

7 0

Take 408/4 because there are 4 faces so that equals 102 m2

liq [111]3 years ago

6 0

Answer: D. $102\ m^2$

Step-by-step explanation:

Given : The surface area of a triangular pyramid is $408 m^2$ .

We know that the total number faces in a triangular pyramid =4

If all the faces of the pyramid are congruent, then the area of one face of this pyramid will be :_

$408\div 4=102\ m^2$

Hence, the area of one face of this pyramid = $102\ m^2$

You might be interested in

Solve & Explain your Math thinking 12-7

Tom [10]

For this case we have the following subtraction:

$12-7$

We can rewrite the subtraction in an easier way.

We have then:

$12-7 = 12 - (5 + 2)$

Then, by doing associative property we have:

$12 - (5 + 2) = (12-2) - 5\\(12-2) - 5 = 10 - 5\\10 - 5 = 5$

Answer:

The value of the subtraction is given by:

$12-7 = 5$

4 0

3 years ago

Read 2 more answers

Guy has saved a total of $95. He buys an airplane model kit for $9, and he wants to donate $8 to each of several local animal sh

Vesna [10]

Answer:

Step-by-step explanation:

After buying airplane model kit, he has left

95 - 9 = 86

We divide 86 by 8 and find the whole number. That would be:

86/8 = 10 remainder 6

The remainder is $6, so he is short of $2 to donate to another shelter. So he can donate to 10 shelters and have $6 remaining.

The first answer chioce is right, $6.

6 0

3 years ago

<img src="https://tex.z-dn.net/?f=%5Chuge%7B%7B%5Cmathfrak%7Bquestion%E0%BF%90%7D%7D%7D" id="TexFormula1" title="\huge{{\mathfra

kramer

Answer:

Step-by-step explanation :

$\sqrt{ \frac{243}{3} }$

$= \sqrt{81}$

$= \sqrt{9 \times 9}$

= <em><u>9(Ans)</u></em>

5 0

3 years ago

Read 2 more answers

Propane has a heat energy of 2,470 BTU/ft cubed. How much energy can a propane tank with a volume of 43.7 ft cubed produce?

professor190 [17]

Answer: $107939\ BTU$

Step-by-step explanation:

Given

Propane produced heat energy of $2470\ BTU/ft^3$

The volume of the tank is $43.7\ ft^3$

The energy produced by this propane tank is

$\Rightarrow 2470\times 43.7=107939\ BTU$

4 0

3 years ago

Frank purchased a new ice box having 2kg capacity. He wants it to be full with ice cubes. He measured the ice cubes to be 3.5 cm

salantis [7]

Answer:

Frank can put 5 cubes in the box.

Step-by-step explanation:

Formula:

Mass = Volume × density.

1 cubic centimetre = 0.001 liter= 1 millilitre

Given that,

Frank purchase a new ice box having 2 kg capacity.

So,the mass of the cubes is 2 kg.

Each ice cubes measured 3.5 cm by 3.5 cm by 3.5 cm.

The volume of a cube is = $Side ^3$

The volume of a each ice cubes is = $3.5^3$ cm³

= 42.875 ml

The ice cubes have a density of 0.914 g/ml

The mass of each cubes are

=volume of each ice cubes × density

=42.875 ml ×0.914 g/ml

=39.18775 gram.

Let x number of ice cubes he can put in the box.

The mass of x cubes is = 39.18775x grams.

2 kg= 2,000 gram [ since 1 kg= 1000 gram]

According to the problem,

39.18775x=2,000

$\Rightarrow x=\frac{2000}{39.18775}$

$\Rightarrow x\approx 51$

Frank can put 5 cubes in the box.

5 0

4 years ago