Question

Ad is the diameter of a circle of radius 6 cm and AB = BC = CD semicircle are drawn with AB and BD as diameters as shown in the figure. find the perimeter and area of the shaded region.​

Answer 1

Step-by-step explanation:

AD is 6 cm

AB=BC=CD=6/3=2

RADIUS OF SEMI CIRCLE = 2 CM

AREA= 1/2*22/7*2*2= 358 CM^2

RADIUS OF SEMI CIRCLE = BC+CD = 4 CM

AREA = 1/2*22/7*4*4 = 176/7 CM^2

AREA OF TGE FULL CIRCLE = 22/7*6*6 = 782 CM^2

AREA OF THE SHADED PORTION = 782 - (358+176/7)

ANSWER = 449