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frez [133]
3 years ago
13

The density of zinc is 7130 kg/m3 . (b) Work out the mass of 5 m3 of zinc.

Mathematics
1 answer:
const2013 [10]3 years ago
7 0

Answer:

Uhdhdb

Step-by-step explanation:

Jsjddj hdhdhhdb

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the perimeter of the floor of a room is 18 metre and its height is 3 cm what is the area of 4 walls of the room​
Lina20 [59]

Note: The height of the room must be 3 m instead of 3 cm because 3 cm is too small and it cannot be the height of a room.

Given:

Perimeter of the floor of a room = 18 metre

Height of the room = 3 metre

To find:

The area of 4 walls of the room.

Solution:

We know that, the area of 4 walls of the room is the curved surface area of the cuboid room.

The curved surface area of the cuboid is

C.S.A.=2h(l+b)

Where, h is height, l is length and b is breadth.

Perimeter of the rectangular base is 2(l+b). So,

C.S.A.=\text{Perimeter of the base} \times h

Putting the given values, we get

C.S.A.=18\times 3

C.S.A.=54

Therefore, the area of 4 walls of the room is 54 sq. metres.

7 0
3 years ago
Space Shuttle has three computers. Computer A is a primary computer and Computer B and Computer C are auxiliary computers. There
sweet-ann [11.9K]

Answer:

Required probability equals 0.18%

Step-by-step explanation:

The probability that the primary and one auxiliary computer fails equals

1) Probability that A and B fails

2)Probability that A and C fails

Thus required probability equals

P(E)=P(1)(2)+P(1)P(3)\\\\P(E)=0.03\times 0.03+0.03\times 0.03P(E)=0.18%

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3 years ago
Please help with these math comparisons!? explain
dem82 [27]
There is no picture, wondering your asking to be explained :)

7 0
3 years ago
Rewrite 6√2 in the simplest form
mylen [45]
6<span>√2 is already in it's simplest form as a radical.


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5 0
3 years ago
Choose the best description of the following number 18
Mrac [35]

Answer:

4.243

step by step explanation:

5 0
3 years ago
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