Question

Find the circumference and area of each of the following circles, given : -
i) Diameter = 56 cm
ii) Diameter = 16.1 cm

(This is class 8th question , chapter = Circumference and area of a circle . Plz answer if anybody know ! )​

Answer 1

Answer:

Given, radius, r = 14 cm

We know that circumference

=

2

π

r

=2πr

=

2

×

22

7

×

14

=

2

×

22

×

2

=

88

=2×227×14=2×22×2=88

cm

(b) Given, radius, r = 28 mm,

Answer 2

Step-by-step explanation:

(i) Circumference = pi×Diameter

= 3.14×56= 175.84cm

Area = pi × radius<2>

= 3.14 × 28 × 28 = 2461.76cm

(ii) Circumference = pi × Diameter

= 3.14 × 16.1 = 50.554cm

Area = pi × radius<2>

= 3.14 × 8.05 × 8.05 = 203.47cm

I hope this is helpful for you and you mark me as a brainlist please