1. Side of eqilateral triangle PQR is 8 cm then find the area of triangle whose side is
half of side of triangle PQR
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1. Side of eqilateral triangle PQR is 8 cm then find the area of triangle whose side is
half of side of triangle PQR
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Answer:
Step-by-step explanation:
Answer:
2.592 cm²
Step-by-step explanation:
Given that it is an equilateral triangle
⇒ Each angle is 60º
Find the area of the 3 sectors:
Area = 3 x 60/360 x πr²
Area = 3 x 60/360 x π(4)²
Area = 25.12 cm²
Find the area the triangle:
Area = √3/4(sides)²
Area = √3/4 (8)
Area = 27.712 cm²
Find the area of the shaded region:
Area = 27.712 - 25.12 = 2.592 cm²
ANSWER IS :--------6.928cm^2