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Chapter 11: Q4. (page 431)

Find the area of each figure.

Short Answer

Expert verified

The area of given figure is43 Square units.

Step by step solution

01

Step 1. Given information.

The sides of triangle are 4 .

02

Step 2. Concept used.

An equilateral triangle is a triangle in which all three sides have the same length. So, the given triangle is an equilateral triangle as the sides of triangle are equal.

Area of equilateral triangle can be found using the formula

A=34a2

Where,

a= Side of an equilateral triangle.

03

Step 3. Find the area of given figure.

Calculation:

A=34a2

=34(4)2

=43 Square units

Therefore, the area of given figure is 43Square units.

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Most popular questions from this chapter

a. Think of a parallelogram made with cardboard strips and hinged at each vertex so that the measure of鈭�C will vary. Find the area of the parallelogram for each measure of鈭�C given30.

b. Think of a parallelogram made with cardboard strips and hinged at each vertex so that the measure of鈭�C will vary. Find the area of the parallelogram for each measure of鈭�C
given 45.

c. Think of a parallelogram made with cardboard strips and hinged at each vertex so that the measure of 鈭�Cwill vary. Find the area of the parallelogram for each measure of鈭�C given 60.

d. Think of a parallelogram made with cardboard strips and hinged at each vertex so that the measure of鈭�C will vary. Find the area of the parallelogram for each measure of鈭�C given 90.

e. Think of a parallelogram made with cardboard strips and hinged at each vertex so that the measure of鈭�C will vary. Find the area of the parallelogram for each measure of鈭�C given120.

Approximate your answers to parts (b), (c) and (e) using2鈮�1.4 and3鈮�1.7. Then record your answers to parts (a)-(c) on a set of axes like the one below.

Find the area of each figure:

An equilateral triangle with height9

The base of a rectangle is8.2cmand height 4cm.What is the area?

The base of a rectangle is9cmand height 4cm. What is the area?

Consecutive sides of the figures are perpendicular. Find the area of each figure.
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