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jok3333 [9.3K]
3 years ago
7

The following octagon is formed by removing four congruent right triangles from a rectangle. What is the total area of the octag

on

Mathematics
2 answers:
rewona [7]3 years ago
7 0
To find the total area of the octagon you can find the area of the rectangle that is created by the entire figure and subtract the areas of the four congruent right triangles.

(10 cm x 6 cm) - [4(1/2 x 2 x 2)]
60 cm² -8 cm² = 52 cm²

The total area of the octagon is 52 cm².
Volgvan3 years ago
5 0

Answer:

\text{Total area of octagon is }52 cm^2

Step-by-step explanation:

we have to find total area of octagon formed by removing four congruent right triangles from a rectangle.

First we have to find the the area of rectangle whose length and breadth are

Length=2+6+2=10 cm

Breadth=2+2+2=6 cm

Area=Length\times breadth=10\times 6=60 cm^2

Area of 4 congruent right triangles are

=4(\frac{1}{2}\times 2\times 2)=4\times 2=8 cm^2

Area of octagon=area of rectangle-area of 4 triangles

=60-8=52 cm^2[/tex]

\text{Hence, total area of octagon is }52 cm^2

 

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