Advanced Geometry : How to find the area of a rhombus

Study concepts, example questions & explanations for Advanced Geometry

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Example Questions

Example Question #41 : How To Find The Area Of A Rhombus

Find the area of the rhombus.

9

Possible Answers:

\(\displaystyle 8.08\)

\(\displaystyle 7.18\)

\(\displaystyle 8.34\)

\(\displaystyle 9.05\)

Correct answer:

\(\displaystyle 8.34\)

Explanation:

13

Recall that one of the ways to find the area of a rhombus is with the following formula:

\(\displaystyle \text{Area}=\text{base}\times\text{height}\)

Now, since all four sides in the rhombus are the same, we know from the given side value what the length of the base will be. In order to find the length of the height, we will need to use sine.

\(\displaystyle \sin x=\frac{\text{height}}{\text{side}}\), where \(\displaystyle x\) is the given angle.

\(\displaystyle \text{height}=(\text{side})(\sin x)\)

Now, plug this into the equation for the area to get the following equation:

\(\displaystyle \text{Area}=(side)^2 \sin x\)

Plug in the given side length and angle values to find the area.

\(\displaystyle \text{Area}=(3)^2\sin 112=8.34\)

Make sure to round to \(\displaystyle 2\) places after the decimal.

 

Example Question #42 : How To Find The Area Of A Rhombus

Find the area of the rhombus.

10

Possible Answers:

\(\displaystyle 31.56\)

\(\displaystyle 38.08\)

\(\displaystyle 29.47\)

\(\displaystyle 28.88\)

Correct answer:

\(\displaystyle 38.08\)

Explanation:

13

Recall that one of the ways to find the area of a rhombus is with the following formula:

\(\displaystyle \text{Area}=\text{base}\times\text{height}\)

Now, since all four sides in the rhombus are the same, we know from the given side value what the length of the base will be. In order to find the length of the height, we will need to use sine.

\(\displaystyle \sin x=\frac{\text{height}}{\text{side}}\), where \(\displaystyle x\) is the given angle.

\(\displaystyle \text{height}=(\text{side})(\sin x)\)

Now, plug this into the equation for the area to get the following equation:

\(\displaystyle \text{Area}=(side)^2 \sin x\)

Plug in the given side length and angle values to find the area.

\(\displaystyle \text{Area}=(7)^2\sin 129=38.08\)

Make sure to round to \(\displaystyle 2\) places after the decimal.

 

Example Question #43 : How To Find The Area Of A Rhombus

Find the area of the rhombus.

11

Possible Answers:

\(\displaystyle 80.56\)

\(\displaystyle 82.51\)

\(\displaystyle 79.65\)

\(\displaystyle 82.52\)

Correct answer:

\(\displaystyle 80.56\)

Explanation:

13

Recall that one of the ways to find the area of a rhombus is with the following formula:

\(\displaystyle \text{Area}=\text{base}\times\text{height}\)

Now, since all four sides in the rhombus are the same, we know from the given side value what the length of the base will be. In order to find the length of the height, we will need to use sine.

\(\displaystyle \sin x=\frac{\text{height}}{\text{side}}\), where \(\displaystyle x\) is the given angle.

\(\displaystyle \text{height}=(\text{side})(\sin x)\)

Now, plug this into the equation for the area to get the following equation:

\(\displaystyle \text{Area}=(side)^2 \sin x\)

Plug in the given side length and angle values to find the area.

\(\displaystyle \text{Area}=(9)^2\sin 84=80.56\)

Make sure to round to \(\displaystyle 2\) places after the decimal.

 

Example Question #421 : Advanced Geometry

Find the area of the rhombus.

12

Possible Answers:

\(\displaystyle 17.26\)

\(\displaystyle 15.84\)

\(\displaystyle 19.02\)

\(\displaystyle 16.51\)

Correct answer:

\(\displaystyle 15.84\)

Explanation:

13

Recall that one of the ways to find the area of a rhombus is with the following formula:

\(\displaystyle \text{Area}=\text{base}\times\text{height}\)

Now, since all four sides in the rhombus are the same, we know from the given side value what the length of the base will be. In order to find the length of the height, we will need to use sine.

\(\displaystyle \sin x=\frac{\text{height}}{\text{side}}\), where \(\displaystyle x\) is the given angle.

\(\displaystyle \text{height}=(\text{side})(\sin x)\)

Now, plug this into the equation for the area to get the following equation:

\(\displaystyle \text{Area}=(side)^2 \sin x\)

Plug in the given side length and angle values to find the area.

\(\displaystyle \text{Area}=(4)^2\sin 82=15.84\)

Make sure to round to \(\displaystyle 2\) places after the decimal.

 

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