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Thepotemich [5.8K]

4 years ago

11

Which are true about the area of a circle? Check all that apply. The diameter is used in the formula. The units are always squar

ed. The area can be found when given the diameter by first finding the radius. The area is the distance around the circle. Circumference can be used to find area.

2 answers:

jenyasd209 [6]4 years ago

8 1

Answer:

selected the correct ones in bold

Step-by-step explanation:

The diameter is used in the formula. The units are always squared. The area can be found when given the diameter by first finding the radius. The area is the distance around the circle. Circumference can be used to find area.

coldgirl [10]4 years ago

4 0

Answer:

The units are always squared.

The area can be found when given the diameter by first finding the radius.

Circumference can be used to find area.

Step-by-step explanation:

1) The diameter is NOT used in the formula. The formula is

Area = pi * radius * radius

2) The units are always squared. Units for area are always squared.

3) The area can be found when given the diameter by first finding the radius.

Diameter/2 = radius, which is the only missing part we need to find the area.

4) The area is NOT the distance around the circle. That is the circumference. Area is contained within the circle.

5) Circumference can be used to find area.

Circumference/pi = diameter, and with the diameter, we can find the area as explained in 3

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Answer:

$24$ $\text{cm}$

Step-by-step explanation:

Given: The distance from the centroid of a triangle to its vertices are $16\text{cm}$ , $17\text{cm}$ , and $18\text{cm}$ .

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Solution:

Consider the figure attached

A centroid is an intersection point of medians of a triangle.

Also,

A centroid divides a median in a ratio of 2:1.

Let G be the centroid, and vertices are A,B and C.

length of $\text{AG}$ $=16\text{cm}$

length of $\text{BG}$ $=17\text{cm}$

length of $\text{CG}$ $=18\text{cm}$

as centrod divides median in ratio of $2:1$

length of $\text{AD}$ $=\frac{3}{2}\text{AG}$

$=\frac{3}{2}\times16$

$=24\text{cm}$

length of $\text{BE}$ $=\frac{3}{2}\text{BG}$

$=\frac{3}{2}\times17$

$=\frac{51}{2}\text{cm}$

length of $\text{CF}$ $=\frac{3}{2}\text{CG}$

$=\frac{3}{2}\times18$

$=27\text{cm}$

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