The area of a circle of radius 4cm is equal to (Take π = 3.142 )
A
10.3cm2
B
15.7cm2
C
50.3cm2
D
17.4cm2
Verified Correct Answer: C.
Step-by-Step Mathematical Solution
Area of a circle (A) = πr2
Radius = 4cm
π = 3.142
A = 3.142 × (4)2
= 3.142 × 16
= 50.272
A = 50.3cm2 (1dp)
Source: Myschool Past Questions Archive (Record #41285)