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2 years ago

A circular plate has circumference of 37.7cm . Calculate the diameter of the plate

Mathematics

2 answers:

Elodia [21]2 years ago

5 0

Answer

12cm

Explanation

frosja888 [35]2 years ago

4 0

Answer: 12 cm

Step-by-step explanation:

Circumference = πd

37.7 = πd

37.7/π = d

12 = d

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3 years ago

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$a.\ \ \ A=684\ m^2$

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a. Area is calculated by summing the areas of the prism's individual surfaces.

#First, calculate the areas of the right-angled surfaces:

$Area=2(\frac{1}{2}bh), b=9, h=12\\\\=2\times \frac{1}{2}\times 9\times 12\\\\=108\ m^2$

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$A=lw\\\\=15\times 16+9\times 16+16\times 12\\\\=576\ m^2$

#We sum the areas to find the total surface areas:

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b.Area is calculated by summing the areas of the prism's individual surfaces.

#First, calculate the areas of the right-angled surfaces:

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$A=lw\\\\=5\times 3+3\times 10+12\times 3\\\\=81\ km^2$

#We sum the areas to find the total surface areas:

$A=A_r+A_t\\\\=81+49.2\\\\=130.2 \ km^2$

Hence, the prism's surface area is $130.2 \ km^2$

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