n(A-B) denotes elements which are in A but not in B 
n(Au B) denotes elements in A and B
n(AnB) denotes elements that are common in A and B 
Now I will add one more set 
n(B-A) which denotes elements in B but not in A 
So, n(AuB) = n(A-B) + n( B-A) +n(AnB) 
70 = 18 +n(B-A) + 25
70 = 43 + n(B-A)
n(B-A) = 70-43
n(B-A) = 27 
So, n(B) = n( B-A) + n( AnB)
= 27+25
= 52
 
 
        
             
        
        
        
Answer:
(A)48
(B)volume of one of the small cubes is 1/64cm^3
c)3/4x1x1=3/4cm^3
Step-by-step explanation:
 
        
             
        
        
        
if i help you, i hope you help me. 
Vpyramid: 1/3BH
1/3(5)(14.2)=
23.6666666667 ROUNDED 23.7 
 
        
             
        
        
        
Answer:
Option c. 11,488.21 cm3
Step-by-step explanation:
<u><em>The picture of the question in the attached figure</em></u>
we know that
The volume of the sphere is equal to

we have
 ---> the radius is half the diameter
 ---> the radius is half the diameter

substitute

