Find the total surface area of these rectangular boxes when they are (i) lidless and (ii) hollow.
2 answers:
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Answer: 600
Explanation:
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Answer: 450 cm squared if not including the inside surface
900 cm squared if including the inside suface
Step-by-step explanation:
A=2(wl+hl+hw)
A=2(150+90+60)
A=2(300)
A=600
but we have a lidless box so we need to subtract the lid...
600-(wl)=
600-(150)=450
If we are including the inside surface it would double as we would be covering both exposed surfaces of bottom, 2 ends, and 2 sides....
450x2=900
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Time of travel = y minutes = y/60 hours
(Because there are 60 minutes in an hour)
We have to calculate distance travelled so we will use formula
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Distance = x * y/60
Distance = xy/60
Hence choice d) xy/60 is the final answer.
Answer:
The large jar is best value for money.
Step-by-step explanation:
For large jar you get 540/4.10 = 131.7g of honey per penny.
For small jar you get 360/2.81 = 128.1g of honey per penny
1) Tanθ= opposite/adjacent
θ=Tan-1(9/7)
θ=52.125 = 52 degrees
2) Cosθ= adjacent/hypothesis
θ=Cos-1(5/12)
θ=65.376 = 65 degrees
Write it as a fraction then simplify. Use a calculator.
