SweetyCandy08 SweetyCandy08

11-09-2021
Mathematics

contestada

The radius of a circle is 21 cm, what is the area?

Respuesta :

jimrgrant1 jimrgrant1

11-09-2021

Answer:

A ≈ 1385.4 cm²

Step-by-step explanation:

The area (A) of a circle is calculated as

A = πr² ( r is the radius )

= π × 21²

= π × 441

= 441π cm²

≈ 1385.4 cm² ( to 1 dec. place )

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