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3 years ago

Help I need to know if each statement is always, sometimes, or never true

Mathematics

2 answers:

Harman [31]3 years ago

8 0

Always
Sometimes
Always
Always

suter [353]3 years ago

5 0

Never
Always
Sometimes - for example sr(12) / sr(3) = sr(12 / 3) = sr(4) = 2
Always

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The circular base of a cone has a radius of 5 centimeters. The height of the cone is 12 centimeters, and the slant height is 13

Iteru [2.4K]

Answer:

283 cm^2

Step-by-step explanation:

Solution:-

We have a cone with a circular base of radius r = 5 cm

The height of the cone is h = 12 cm

The slant height of the cone is L = 13 cm

We are to determine the surface area of the cone. The surface area of the cone is comprised of two parts:

Base Area : Circle

$A_1 = \pi r^2\\\\A_1 = \pi 5^2\\\\A_1 = 25\pi$

Curved Surface: conical

$A_2 = \pi * r*L\\\\A_2 = \pi * 5*13\\\\A_2 = 65\pi$

The total surface area of the cone can be written as ( A ):

$A = A_1 + A_2\\\\A = (25 + 65 )*\pi \\\\A = 90*(3.14) \\\\A = 282.7433 cm^2$

Answer: The surface area of the cone to nearest whole number would be 283 cm^2

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Step-by-step explanation:

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Step-by-step explanation:

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Step-by-step explanation:

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