Using the approximation 3.14 for \pi what is the radius of a circle with circumference 44m
1 answer:
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Answer:
the 8×3×11 one
Step-by-step explanation:
we need to find the surface area of each.
for the 10×10×3=
2(10×3+10×10+10×3)
2(30+100+60)
2(190)
380
for the 8×3×11
2(8×3+11×8+11×3)
2(24+88+33)
2(145)
290
Let 
represent Mandy's age and 
represent Sandy's.
From the first statement we have:
From the second statement we have:
So we need to solve this system of equations:
Express from first equation equation:
Replace found value in second equation and solve the resulting equation:
Replace found value in first equation and solve the resulting equation:
So, Mandy is 16 years old and Sandy is 40 years old. The difference between their ages is 40 - 16 = 24 years.
From the first statement we have:
From the second statement we have:
So we need to solve this system of equations:
Express
Replace found value in second equation and solve the resulting equation:
Replace found value in first equation and solve the resulting equation:
So, Mandy is 16 years old and Sandy is 40 years old. The difference between their ages is 40 - 16 = 24 years.