Triangle ABC is the semi circle .find the area of shaded region given AB=42cm
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Answer:area of the shaded region = 252 cm² if triangle ABC in the semi circle and Diameter = 42 cm
Step-by-step explanation:
ΔABC in the semi circle
CO ⊥ AB
OA = OB = OC = Radius = 42/2 = 21 cm
Area of ΔABC = (1/2) 42 * 21 = 441 cm²
Area of Semi circle = (1/2) π R²
= (1/2) (22/7) * 21²
= 693 cm²
area of the shaded region = 693 - 441 = 252 cm²
Step-by-step explanation:
Answered by
2
Answer:
ΔABC in the semi circle
CO ⊥ AB
OA = OB = OC = Radius = 42/2 = 21 cm
Area of ΔABC = (1/2) 42 * 21 = 441 cm²
Area of Semi circle = (1/2) π R²
= (1/2) (22/7) * 21²
= 693 cm²
area of the shaded region = 693 - 441 = 252 cm²
hope it helps you...☺☺
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