Question

a circular carpetdiameter 1.4 m is spotted in the centre with the 20 Street border find the area of the shaded portion of the carpet to the nearest square​

Answer 1

Answer:

14 is this questions answer

Answer 2

Answer:

Let 1.4 m=140 cm

Radius =2140=70 cm

Extra strip is of diameter 

=20 cm/2.

Radius =10 cm

∴ Radius for outer circle 

                        =80 cm

Area of that path or strip

 =722×R2−722×r2

=722(R2−r2)

=722(80+70)(80−70)

=722×150 cm×10 cm

=733000 cm2