Solution:
We have radius of semicircle = 25 cmthe perimeter of semicircle = C
⇒ the semicircular arc + the diameter
⇒ πr + 2r
C = r(π + 2) = 25(3.14 + 2)
= 128.5 cm
Area of semicircle = A = when r = radius of circle
⇒
Hence option (3) is correct.
MathematicsThe perimeter and area of semi circular plate of radius 25 cm areClass: 10
The perimeter and area of semi circular plate of radius 25 cm are
Class: 10
the perimeter of semicircle = C
⇒ the semicircular arc + the diameter
⇒ πr + 2r
C = r(π + 2) = 25(3.14 + 2)
= 128.5 cm
Area of semicircle = A = when r = radius of circle
⇒
Hence option (3) is correct.
