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3 years ago

The area of the floor of a cubical room is 49m .find the area of 4 walls of a room.

Mathematics

2 answers:

murzikaleks [220]3 years ago

6 0

Answer:

SINCE ITS A CUBE OF FLOOR SHAPE.

area of 1 wall=a²

 

 =4

area of 4 wall=4x49

 

 =169m²Ans.

olga55 [171]3 years ago

5 0

Answer: $196m^2$

Step-by-step explanation:

since it's a cube the floor is in square shape

area of one wall = $a^2$
area of 4 walls = = $4$ × $49$ = $196$

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(-0.1059 ; - 0.0337)

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The data table is attached in the picture below:

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3 years ago

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Harold wrote this equation to model the level of water in a pool over time. The variable x represents time in hours. f(x) = 3,50

lina2011 [118]

Answer:

The water level is falling.

The initial level of water in the pool was 3,500 units

The water was 2,600 units high after 4 hours.

Step-by-step explanation:

The given function that models the water level is

$f(x)=3,500-225x$

where $x$ represents time in hours.

The function represents a straight line that has slope $m=-225$

Since the slope is negative, it means the water level is falling.

The initial level of water in the pool can found when we put $x=0$ into the function.

$f(0)=3,500-225(0)$

$f(0)=3,500$ , hence the initial level is 3,500.

To determine the level of water in the pool after 14 hours, we put $x=14$ into the equation to get;

$f(14)=3,500-225(14)$

$f(14)=3,500-3150$

$f(14)=350$

To determine the water level after 4 hours we put $x=4$

$f(4)=3,500-225(4)$

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3 years ago

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Pls answer asap!!ty!! Please label the missing angles below.

marusya05 [52]

Answer:

Triangle A: 38 degrees

Triangle B: Unknown (not enough information)

Triangle C: Unknown (not enough information)

Triangle D: 70 degrees

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Step-by-step explanation:

Work for Triangle A: 90 + 52 = 142. 180 - 142 = 38.

Work for Triangle B: Unidentifiable because there is no indicator to tell you if any of the angles/lines are equal. Generally there will be a "double lined" indicator in the corners of which a triangles angles are equal.

Work for Triangle C: Same as B.

Work for Triangle D: 90 + 20 = 110. 180 - 110 = 70.

Work for Triangle E: 90 + 50 = 140. 180 - 140 = 40.

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3 years ago

The area of the floor of a cubical room is 49m .find the area of 4 walls of a room.​

The area of the floor of a cubical room is 49m .find the area of 4 walls of a room.