The surface area of a cylinder can be determined with this formula
sa = surface area of 2 circles + surface area of side
sa = (2 × π × r²) + (2 × π × r × t)
Find the value of r (radius)
r = 1/2 diameter
r = 1/2 × 14.2
r = 7.1 cm
Plug the numbers into the formula
sa = (2 × π × r²) + (2 × π × r × t)
sa = (2 × π × 7.1²) + (2 × π × 7.1 × 12.8)
sa = 100.82π + 181.76π
sa = 282.58π
sa = 282.58 (3.14)
sa = 887.3
The surface area is 887.3 cm². The answer is third option.
Answer:
-204ºC
Step-by-step explanation:
The third option.
Answer:
x=-2 y=-6
Step-by-step explanation
5x+4=-3x-12
+3 +3x
8x+4=-12
-4 -4
8x=-16
÷8 ÷8
x=-2
Looking for y too, plug x into the original equation
5(-2)+4
-10+4
-6
y=-6
Answer:
Step-by-step explanation:
we know that
The simple interest formula is equal to
where
A is the Final Investment Value
P is the Principal amount of money to be invested
r is the rate of interest
t is Number of Time Periods
in this problem we have
substitute in the formula above
Answer:
b. Every 24 minutes
Step-by-step explanation:
A neon sign blinks every 6 minutes, and another sign blinks every 8 minutes.
The first step is to:
Find and list multiples of each time each neon sign blinks.
This means, we find the Multiples of 6 and 8
Multiples of 6:
6, 12, 18, 24, 30, 36
Multiples of 8:
8, 16, 24, 32, 40
The first and common multiple of 6 and 8.
Therefore, the Least common multiple [LCM(6, 8) ] = 24
Hence, they often blink at the same time every 24 minutes.
Therefore, option b.Every 24 minutes is correct.