Please help!!!!!!!!!!!!1.4.1 and 1.4.2 only

Mathematics

2 answers:

Ipatiy [6.2K]3 years ago

5 0

Answer:

Step-by-step explanation:

easy

azamat3 years ago

5 0

9514 1404 393

Answer:

1.4.1 35.34 mm²

1.4.2 113.10 mm

Step-by-step explanation:

1.4.1 There are 5 circles in the first two patterns. The area of one circle in terms of its diameter is ...

A = (π/4)d²

Then the area of the 5 circles is ...

A = 5(π/4)(3 mm)² = 45π/4 mm² ≈ 35.34 mm²

1.4.2 There are 12 circles in the first 3 patterns. The perimeter of one circle is given by the formula ...

P = πd

Then the total perimeter of the 12 circles is ...

P = 12π(3 mm) = 36π mm ≈ 113.10 mm

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Harvey plans to use 5 ft of shelving for four shelves whose lengths are to be a series of consecutive even numbers. How many inc

IgorC [24]

5 ft = 5 * 12 in = 60 inches
Four consecutive even numbers are: x, x + 2, x + 4, x + 6
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4 x = 60 - 12
4 x = 48
x = 48 : 4
x = 12
Answer:
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Step-by-step explanation:

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