Area and Perimeter Practice Test 4

Question : 36 of 40

Marks: +1, -0

The area of the incircle of an equilateral triangle of side 42 cm is

Solution:

Height of equilateral triangle =

√3/2 × 42

21√3

cm
Therefore, radius of incircle =

1/3 × 12√3

7√3

cm
Area of incircle =

{22}/7 × 7√3 × 7√3

462 cm^2

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