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Alex73 [517]
3 years ago
12

Find the total area for the regular pyramid T.A. =

Mathematics
1 answer:
Stolb23 [73]3 years ago
4 0

Answer:

The answer to your question is At = 48 + 36\sqrt{3}

Step-by-step explanation:

Area = Area of the base + Lateral area

a) Area of the base

    Area = length x height / 2

    length = 12

    height² = 12² - 6²

                 = 144 - 36

                 = 108

    height = \sqrt{108} = 6\sqrt{3}

    Area = 12 x 6\sqrt{3} / 2

              = 36\sqrt{3}

b) Lateral area

   height² = 10² - 6²

                = 100 - 36

                = 64

   height = 8

   Area = 12 x 8/2

            = 48

c) Total area

   At = 48 + 36\sqrt{3}

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Given: AB = 12 AC = 6 Prove: C is the midpoint of AB.
Andrew [12]

Answer:

Line AC is the half of libe AB

Step-by-step explanation:

Let's define a midpoint.

Mid point it the point or line that divides a line in to two equally parts.

So if line AB = 12

The midpoint with any dimensions should be a line that divides it into two.

12/2 = 6

So the midpoint is a line that lies at the point of 6

So dimensions l of AC = 6

AC is the midpoint of AB

So it means that C i.e point C is the midpoint of line AB

making line AC the half of line AB

6 0
4 years ago
If 4 batches of muffins and 5 loaves of bread are baked, how much flour will be left? Give your answer in kilograms. b. The rema
DerKrebs [107]

This question is Incomplete

Complete Question

The bakery bought 4 bags of flour containing 3.5 kg each. 0.475 kg of flour is needed to make a batch of muffins, and 0.65 kg is needed to make a loaf of bread.

a. If 4 batches of muffins and 5 loaves of bread are baked, how much flour will be left? Give your answer in kilograms.

b. The remaining flour is stored in bins that hold 3 kg each. How many bins will be needed to store the flour? Explain your answer.

Answer:

a. 8.85kg of flour is left.

b. 2.95 bins

Step-by-step explanation:

The bakery bought 4 bags of flour containing 3.5 kg each.

Total kg of flour the Bakery bought : 4 × 3.5kg

= 14 kg of flour

0.475 kg of flour is needed to make a batch of muffins

1 batch of muffin = 0.475kg of flour

4 batches of muffins = ???

Cross Multiply

4 batches × 0.475kg/ 1 batch

= 1.9kg of flour was used.

0.65 kg is needed to make a loaf of bread.

1 loaf of bread = 0.65kg of flour

5 loaves of bread = ???

Cross Multiply

5 loaves × 0.65/1 loaf

= 3.25 kg of flour.

Total kg of flour used = 1.9kg + 3.25kg

= 5.15kg of flour.

The amount of flour left = 14kg - 5.15kg

= 8.85kg of flour is left.

b. The remaining flour is stored in bins that hold 3 kg each. How many bins will be needed to store the flour?

3 kg of flour is stored = 1 bin

8.85 kg of flour is stored = x

Cross Multiply

3kg × x = 8.85kg × 1 bin

x = 8.85 kg × 1 bin/3kg

x = 2.95 bins

7 0
4 years ago
The ratio 64 to 96 in simplest form is<br> 3
dybincka [34]

Answer:

nice.

Step-by-step explanation:

3 0
3 years ago
A college freshman started the year with $4000 in spendingmoney and after three months, she has $2800 left. Assume thatshe will
Bezzdna [24]
She would have $800 left. 
$4000 - $2800= 1200
1200 is how much she spent the last 3 months 
1200/ 3= 400
400 * 5= $2000
2800- 2000= $800
6 0
3 years ago
Read 2 more answers
Simplify (9 ^ 2)/(9 ^ 7)<br> PLS HELP!!!! WILL MARK BRAINLIEST!
Gre4nikov [31]

Answer:

1/9^5

Step-by-step explanation:

Yeah you're correct, 9^2/9^7 = 1/9^(7-2).

5 0
3 years ago
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