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egoroff_w [7]
4 years ago
15

20points please please help!!!!!!

Mathematics
1 answer:
Bad White [126]4 years ago
7 0
Juan has $8 dollars left
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A rectangular solid has sides of 7 cm, 9 cm, and 11 cm. What is its surface area?
otez555 [7]

Answer:

Surface area is, 478 square centimeter

Step-by-step explanation:

Surface area (S)of rectangle is given by:

S = 2(lw+wh+hl)                 .....[1]

where,

l is the length

w is the width

h is the height of the rectangle respectively.

As per the statement:

A rectangular solid has sides of 7 cm, 9 cm, and 11 cm

⇒ l = 7 cm , w = 9 cm and h = 11 cm

Substitute in [1] we have;

S = 2(7 \cdot 9+9 \cdot 11+11 \cdot 7)

⇒S = 2(63+99+77) = 2 \cdot 239 = 478 cm^2

Therefore, the surface area is, 478 square centimeter

7 0
3 years ago
PLEASE HELP QUICKLY : find the sum and difference of 5/6 and 1/2
choli [55]

Hello!

The sum of 5/6 and 1/2 is 1 1/2

5/6 > 3/4 so round it to 1.

1/4 ≤ 1/2 ≤ 3/4 so round it to 1/2.

Estimating:

1 + 1/2 = 1  1/2

The difference of 5/6 and 1/2 is 1/2

5/6 > 3/4 so round it to 1.

1/4 ≤ 1/2 ≤ 3/4 so round it to 1/2.

Estimating:

1 - 1/2 = 1/2

Hope this helps!

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Answer:

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all you have to do is divide both sides by 24

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Step-by-step explanation:

12g²-27h²​

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Step-by-step explanation:


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