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26-04-2016
Mathematics

contestada

What is the approximate area of a circle with a radius of 13cm?

A.40.8cm²

B.530.7cm²

C.784cm²

D.2461.8 cm²

Respuesta :

Аноним Аноним

26-04-2016

area of a circle=πr²
r=radius=13 cm
area of a circle=π(13 cm)²=169π cm²≈530.93 cm²≈530.7 cm²

Answer: B.530.7 cm²

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