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Bess [88]
3 years ago
14

what is the surface area of a triangular prism with a length of 8 base of 4 height of 6 and side length of 6.3

Mathematics
1 answer:
Firdavs [7]3 years ago
4 0
The area of the two triangular bases is
  A = (4 mm)(6 mm) = 24 mm²

The perimeter of the triangular base is
  P = 2(6.3 mm) + 4 mm = 16.6 mm
so the lateral area is
  A = (16.6 mm)(8 mm) = 132.8 mm²

The total surface area is the sum of the base areas and the lateral area.
  total area = 24 mm² + 132.8 mm² = 156.8 mm²

This value corresponds to selection ...
  D) 156.8 mm²
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As a block of ice melts it changes from 1 3/4 lb to 1/4 lb and takes 1/4 hr. What is the rate the ice changes?
Nutka1998 [239]

The rate at which the ice changes is -3/8 lb per hr

<h3>What is the rate the ice changes?</h3>

The given parameters are:

Changes =1 3/4 lb to 1/4 lb

Time = 1/4 hr.

The rate the ice changes is calculated as:

Rate = Change/Time

So, we have

Rate = (1/4 lb - 1 3/4 lb)/(1/4 hr)

Evaluate the difference

Rate = (-1 1/2 lb)/(1/4 hr)

Evaluate the quotient

Rate = -3/8 lb per hr

Hence, the rate at which the ice changes is -3/8 lb per hr

Read more about rates at:

brainly.com/question/19493296

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1 year ago
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NEED HELP ASAP!!
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Answer:we multiply by the reciprocal of a fraction when completing a division problem because it is a rule in mathematics that when you divide two fraction, you change the division sign to multiplication and flip the fraction at the right of the multiplication sign.

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Therefore multiplying by the reciprocal of a fraction when completing a division problem is a short cut method that has been tested and proven to be correct.

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