Answer: C, 420
Step-by-step explanation:
The first positive even numbers are from 2 to 40, so the sum is equal to the number of terms, times the number of terms plus one (20*21 = 420)
the sum is 420
Answer:
75*4= 300. Ali earned $300 that summer
Step-by-step explanation:
The right answer is Option C.
Step-by-step explanation:
Given,
Diameter = 6 cm
Radius = 
Height = 8 cm
π = 
Surface area = 2πrh+2πr²
Surface area = 
Surface area = 
Surface area = 
Surface area = 207.4 cm²
Rounding off to nearest whole number
Surface area = 207 cm²
The surface area of cylinder is 207cm².
The right answer is Option C.
Keywords: surface area, cylinder
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3 meters. If you glue one rod that is equivalent to 1 meter and another that is equivalent to 2 meters, then you just add them together. 1+2=3