dimension = 30.0 m ✕ 15.0 m ✕ 5.0 m.
density = 1.20 kg/m3
(a)volume = lenght * breadth * height 
       = 30 * 15 * 5
       = 2250 metre cube = 2.25 cubic meter
(b)   mass of air = density * volume 
         mass of air = 1.2 * 2250
 mass of air = 2700kg
weight  = mass * 9.8
              = 2700 * 9.8
              = 26,460 N
- The definition of Density is the amount of matter in a given space, or volume
-  Density = mass/volume
- units for density kg/m^3
- Density of water 1g/ml
- Salt water is denser that is why  don't sink as easily.
To know more about density   visit : brainly.com/question/15164682
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Hi there!
Assuming you're asking about the solar system, there are nine planets. But, if you're wanting to know about the universe, there are trillions and trillions of planets (most of which we haven't yet discovered). 
Hope this helps!
        
                    
             
        
        
        
G is the answer for apex vs / Chehhhh
        
             
        
        
        
Answer: a. forms where light rays coming from the dog converge. 
Explanation: 
While photographing through digital camera, the light from the object through the lens converges and falls on image sensor. 
The image breaks into many pixels and color and brightness of each pixel is measured and stored in form of number. This forms a digital image.
Thus, the correct option is a because the lens converges the light coming from the object onto the sensor.