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Naya [18.7K]
3 years ago
12

A square measures 8 inches on each side. What is its area rounded off to the nearest square centimeter? (

Mathematics
1 answer:
Troyanec [42]3 years ago
5 0
The area of any rectangle is (length) x (width).
Your square is a rectangle, with length=width.

Using  1 inch = 2.54 centimeters, the square's area is

               (8 x 2.54 cm)  x  (8 x 2.54 cm)

           =     (20.32 cm)  x  (20.32 cm)  =  412.90⁺ cm²

Rounded to the nearest cm², it's 413 cm² .
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Answer:

3x +12.95 = 32.46

Step-by-step explanation:

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uppose we want to build a rectangular storage container with open top whose volume is $$ cubic meters. Assume that the cost of m
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Answer:

a = length of the base = 2.172 m

b = width of the base = 1.357 m

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Step-by-step explanation:

Suppose we want to build a rectangular storage container with open top whose volume is 12 cubic meters. Assume that the cost of materials for the base is 12 dollars per square meter, and the cost of materials for the sides is 8 dollars per square meter. The height of the box is three times the width of the base. What’s the least amount of money we can spend to build such a container?

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b = width of the base

c = height

V = a.b.c = 12

Area without the top:

Area = ab + 2bc + 2ac

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c = 3b

Cost = 12ab + 16b.3b + 16a.3b = 12ab + 48b² + 48ab = 48b² + 60ab

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C(b) = 48b² + 240/b

C'(b) = 96b - 240/b²

Minimum cost: C'(b) = 0

96b - 240/b² = 0

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96b³ - 240 = 0

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3 years ago
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Step-by-step explanation:

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