Answer: Option 'B' is correct.
Step-by-step explanation:
since we have given that
Time taken to build a cabinet by Genna = 4 hours.
Time taken to build a cabinet by Claude = 3 hours
Now, time taken by both Genna and Claude to build a cabinet together is to be find.
Work done by Genna is given by
Work done by Claude is given by
According to question,
Hence, Option 'B' is correct.
Answer:
À.-42
Step-by-step explanation:
hey mate hope its help you......
Answer:
B
Step-by-step explanation:
Base area = (base x width) = 20 x 18 = 360 cm^2
Base perimeter = (base + width) x 2 = (20 + 18) x 2 = 76 cm
lateral surface = (base perimeter x height) = 76 x 15 = 1140 cm^2
Surface area = (base area x 2) + lateral surface = (360 x 2) + 1140= 1860 cm^2
surface area of a single prism = 1860 / 2 = 930 cm^2
The volume equation for a cylinder is V=(pi)(di^2)(h)/4, so in this problem it is V=pi(8^2)(10)/4 --> V=pi(64)(10)/4 --> V=pi(640)/4 --> V=160pi or 502.65