Question

 (40°/360°)×πr²cm²

= 68.44 cm2
radius =7(or)r=7
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Answer 1

Answer:

Areaofringisgivenas π(R2−r2)

=22/7×(196−49)

=22×21=462

areaofringsectoris x/360×areaofring

⟹40/360×462=51.33cm

2

Answer 2

Answer:

An urban area is the region surrounding a city. Most inhabitants of urban areas have nonagricultural jobs. Urban areas are very developed, meaning there is a density of human structures such as houses, commercial buildings, roads, bridges, and railways. "Urban area" can refer to towns, cities, and suburbs.