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2 years ago

14

Sid wrote 541,309 on his paper.Using numbers and words, explain how the number would change if he exchanged the digit in the hun

dred thousands and tens place

1 answer:

olga nikolaevna [1]2 years ago

3 0

If he switched those around, you new number will be; 41,359

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find the surface area of a right regular hexagonal pyramid with sides 3 cm and slant heights 6cm. show all of your work.

DedPeter [7]

Answer:

The surface area of right regular hexagonal pyramid = 82.222 cm³

Step-by-step explanation:

Given as , for regular hexagonal pyramid :

The of base side = 3 cm

The slant heights = 6 cm

Now ,

The surface area of right regular hexagonal pyramid = $\frac{3\sqrt{3}}{2}\times a^{2} + 3 a \sqrt{h^{2}+ 3\times \frac{a^{2}}{4}}$

Where a is the base side

And h is the slant height

So, The surface area of right regular hexagonal pyramid = $\frac{3\sqrt{3}}{2}\times 3^{2} + 3 \times 3 \sqrt{6^{2}+ 3\times \frac{3^{2}}{4}}$

Or, The surface area of right regular hexagonal pyramid = $\frac{3\sqrt{3}}{2}\times 9 + 9 \sqrt{36+ 3\times \frac{9}{4}}$

Or, The surface area of right regular hexagonal pyramid = 23.38 + 9 × $\frac{171}{4}$

∴ The surface area of right regular hexagonal pyramid = 23.38 + 9 × 6.538

I.e The surface area of right regular hexagonal pyramid = 23.38 + 58.842

So, The surface area of right regular hexagonal pyramid = 82.222 cm³ Answer

6 0

3 years ago

What is the numerical expression 5/8 - 5/12 (3-1/4) + 2/3<br><br> A.9<br> B.2<br> C.1/2<br> D.1/9

Ronch [10]

The answer is B. 7/48
Hope this helps!

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3 years ago

Evaluate B^2for B=9.

koban [17]

Answer:

81

Step-by-step explanation:

since b is 9

do 9x9 which is 81

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2 years ago

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Leviafan [203]

Answer:

320

Step-by-step explanation:

hope this helps :)

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2 years ago

21x cubed - 18x squared y + 24xy squared

Alexxx [7]

21x³ - 18x²y + 24xy²

Simplify!

7x³ - 6x²y + 8xy²

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3 years ago