Question

Area of circular ring formed by 2 concentric circles whose radii are 5.7cm and 4.3cm is​

Answer 1

Answer:

43.98 sq. cm

Step-by-step explanation:

Let the radii of the outer and inner circles be r2​ and r1​ respectively; we have

Area=πr22​−πr12​=π(r22​−r12​)

=π(r2​−r1​)(r2​+r1​)

=π(5.7−4.3)(5.7+4.3)=π×1.4×10 sq. cm

=3.1416×14sq.cm.=43.98 sq. cm

Answer 2

Answer:

48.98sq.cm

Step-by-step explanation:

brainiest answer anyhow