sector area calculator. FAQs How do I find the perimeter of a semicircle given radius? To determine the perimeter of a semicircle: Write down the radius r. Multiply the radius by π+2: r× (π+2) ≈ 5.14159 × r. The result is the perimeter of your semicircle. You can verify the ...
SemicircleA =1/2πr2 Circular RingA = πR2– πr2 EllipseA = πab SectorA = (θ÷ 360)πr2 PentagonA = (a2× 5) ÷ (4 × tan(π÷ 5)) HexagonA = (a2× 6) ÷ (4 × tan(π÷ 6)) OctagonA = (a2× 8) ÷ (4 × tan(π÷ 8)) ...
If we need to find the area of sector when the angle is given in radians, we use the formula, Area of sector = (1/2) × r2θ; where θ is the angle subtended at the center, given in radians, and 'r' is the radius of the circle. So, let us understand where the formula comes...
The circles are also two-dimensional shapes that have a closed round geometry having a constant distance from a central point that is situated on the same planner space and this constant measure is known as the radius of the circl...
What is the area of a semicircle with the radius of 1.4 m? Community Answer Given a radius of circle = 1.4m. As we know, the area of semicircle=((pie)*r*r)/2=(3.14*1.4*1.4)/(2)=3.078 m square. Not Helpful 106 Helpful 88 See more answers Ask a Question Submit Tips ...