Question

10 132, (A) Am (B). 152 3 Measure of diametre of circular region is 140cm, Its area is :- (A) 1.54 sq.m (B) 15.4 sq.m. (C) 1.054 sq.m (D) ... 1.55 sq.m​

Answer 1

Answer:

We know that the radius of a circle is half the diameter,

So,Radius = Diameter/2

Radius = 140/2

Radius = 70 cm

Area of circle = πr²

= ( π ) ( 70 cm )²

$= \frac{22}{7} \times 70$

= 220 cm²

Answer 2

Answer:

We know that the radius of a circle is half the diameter,

So,Radius = Diameter/2

Radius = 140/2

Radius = 70 cm

Area of circle = πr²

= ( π ) ( 70 cm )²

$\frac{22}{7} ×70$

=20cm²