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kodGreya [7K]
3 years ago
5

what is the surface area of a square pyramid if the base has an area of 16cm2 and lateral faces have a slant height of 12cm?

Mathematics
2 answers:
myrzilka [38]3 years ago
5 0
The surface area of this square pyramid is 112 cm^2!
Hope this helps <3
melamori03 [73]3 years ago
3 0

Answer:

Surface area of a square pyramid is:

112 cm²

Step-by-step explanation:

The surface area of square pyramid is given by:

S=2bs+b²

Where b is the length of base and s is the slant height.

and Area of base=b²

Here, s=12 cm

and Area of base=b²=16 cm²

⇒ b=4 cm

Hence, Surface Area=2×12×4+4×4

                                 = 112 cm²

Hence, surface area of a square pyramid is:

112 cm²

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sweet [91]
0.06 times 96 equals 5.76
4 0
3 years ago
Some students are working together to draw a picture of a playground.
vodomira [7]

From the information provided by the statement, you know that

*Ann draws 2/16 of the playground

*Susan draws 6/16 of the playground because she draws 3 times as much as Ann so

3\cdot\frac{2}{16}=\frac{3}{1}\cdot\frac{2}{16}=\frac{6}{16}

*Louise draws 3/16 because she draws half as much as Susan, so

\frac{1}{2}\cdot\frac{6}{16}=\frac{6}{32}=\frac{2\cdot3}{2\cdot16}=\frac{3}{16}

*Sam draws 2/16 because she draws 1 less section than Louise

\frac{3}{16}-\frac{1}{16}=\frac{2}{16}

Now, let x be the fraction of the playground that still needs to be drawn. Then, you have

\begin{gathered} \frac{2}{16}+\frac{6}{16}+\frac{3}{16}+\frac{2}{16}+x=\frac{16}{16} \\ \text{ Add similar terms} \\ \frac{13}{16}+x=\frac{16}{16} \\ \text{ Subtract }\frac{13}{16}\text{from both sides of the equation} \\ \frac{13}{16}-\frac{13}{16}+x=\frac{16}{16}-\frac{13}{16} \\ x=\frac{3}{16} \end{gathered}

Therefore, 3/16 of the playground still needs to be drawn.

5 0
1 year ago
Laura and Brent paddled a canoe 6 miles upstream in four hours. The return trip took 3 hours. What is the rate at which they pad
Harrizon [31]
P = paddling speed

C = speed of the current

Upstream: 6 = 4 (P - C. Downstream: 6 = 3 (P + C)

4P - 4C = 6

3P + 3C = 6

12P - 12C = 18

12P + 12C = 24

Add the equations:

24P = 42. P = 42/24 = 1.75 mph

Subtract the equations:

-24C = -6

C = 0.25 mph
5 0
3 years ago
According to the chart, from 1986-1996, unintentional drug overdose deaths per 100,000 population began to rise. The numbers for
Vaselesa [24]

Answer:

The mean of these statistic is 2.18.

Step-by-step explanation:

According to the chart, from 1986-1996, unintentional drug overdose deaths per 100,000 population began to rise.

The given data set is

2, 1, 2, 2, 1, 2, 2, 3, 3, 3, 3

Formula for mean:

Mean=\frac{\sum x}{n}

Using this formula, the mean of the data is

Mean=\frac{2+1+2+2+1+2+2+3+3+3+3}{11}

Mean=\frac{24}{11}

Mean=2.181818

Mean\approx 2.18

Therefore the mean of these statistic is 2.18.

3 0
3 years ago
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Harrizon [31]
3 so D
Answer is 119

Hope this helps:)
3 0
3 years ago
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