The answer is 1 km
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Proofs:
Area of a rectangle=length x width
Area of rectangle= 4kmE2
Length of rectangle= 4km
Width of rectangle= X
4=4(x)
Find x
4=4(1)
Therefore the width of the rectangle= 1km
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Brainliest?
If you divide 21/49 by 7 you get 3/7
Answer:
B
r=9.7
C=60.95
Step-by-step explanation:
Given diameter of 19.4
r = d/2
19.4/2
r=9.7
C= 2(pi)r
2(pi)(9.7)
60.95 = C
It takes the son one and half hours to clean the house. To find this you need the equations F+S=2 and F+1=S. (F=father and S=son) You take the F+1 and substitute it in for S in F+S to get F+(F+1)=2. Then you combined like factors, 2F+1=2, and simplify to get F=.5hr. After this you plug .5 in to F+1=S to get (.5)+1=S, meaning it takes the son 1.5 hour to clean the house.
