Area of semi circle = π r²/2
= π 20 × 20 / 2
= 200 π
= 628 cm² (approx)
Answer: area of triangle is base times height divide by 2
b*h/2
Answer:
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Step-by-step explanation:
Answer:
( x+2)( x-3)=0
b ÷ (-2) = 18
Step-by-step explanation:
Answer:
Radius of a circle
Step-by-step explanation:
1. A line from the center of a circle to a point on the circle.
2. The distance from the center of a circle to a point on the circle.
Try this Drag the orange dot. The blue line will always remain a radius of the circle.
