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liq [111]
3 years ago
10

PLEASE HELP QUICKLY!!

Mathematics
1 answer:
svp [43]3 years ago
3 0

Answer:

3π

Step-by-step explanation:

To find the area of a sector, use this formula: (α/360) × πr²

α & r will be substituted by 120 and 3 respectively.

(120/360) × π(3²)

<em>Step 1: 120/360 is equivalent to 1/3.</em>

1/3 * π(3²)

<em>Step 2: Square 3 to get 9.</em>

1/3 * π(9)

<em>Step 3: Multiply 9 by π to get 9π</em>

1/3 * 9π

<em>Step 4: Multiply 1/3 by 9π</em>

3π

The area of sector DEF in terms of π is 3π.

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<h3>The dimensions of the given rectangular box are:</h3><h3>L  =   15.874 cm  , B  =  15.874 cm   , H = 7.8937 cm</h3>

Step-by-step explanation:

Let us assume that the dimension of the square base = S x S

Let us assume the height of the rectangular base = H

So, the total area of the open rectangular box  

= Area of the base +  4 x ( Area of the adjacent faces)

=  S x S  +  4 ( S x H)   = S² +  4 SH   ..... (1)

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Substituting the value of H in (1), we get:

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L  =   15.874 cm

B  = 15.874 cm

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