Question

Q. 1)Find area and circumference of
circle who's diameter is 2.8m
11:46 AM


please solve step by step thanks​

Answer 1

diameter, d = 2.8 m

Since, Diameter = 2 × Radius

==> radius, r = 1.4 m

Area Of circle:

==> πr²

==> 22/7 × 1.4 × 1.4

==> 22 × 0.2 × 1.4

==> 6.16 m²

Circumference Of circle:

==> 2πr

==> d × π ( diameter, d = 2r , { r = radius } )

==> 22/7 × 2.8

==> 22 × 0.4

==> 8.8 m

Answer 2

Answer:

diameter=2.8m

diameter=2*radius

diameter/2=radius

2.8/2=radius

radius=1.4m

AREA OF A CIRCLE=πr^2

22/7*1.4*1.4

3.14*1.4*1.4

=ans by your self

circumference=2πr

2*22/7*1.4

2*3.14*1.4