The diameter of a newly minted quarter is 2.5 cm. what is the area of the quarter?

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2006-11-05 03:14:40 · 4 answers · asked by virgil m 1 in Science & Mathematics ➔ Engineering

area of a circle = Пr²
diameter = 2.5

therefore radius = 1.25

therefore the area = 1.25² x П

area = 4.9087...cm²

2006-11-05 03:20:36 · answer #1 · answered by x..steph..x 1 · 2⤊ 0⤋

area =22/7 x r squared. so (1.25x1.25) x 22/7 Do the maths yourself. Pi x radius squared=area

2006-11-05 03:20:20 · answer #2 · answered by hharry_m_uk 4 · 1⤊ 1⤋

4.91 sq cm.

The area of a circle is πr2 or 3.1416 times 1.25 times 1.25

2006-11-05 03:18:20 · answer #3 · answered by Susie 5 · 1⤊ 0⤋

area of a circle = (3.14)*radius*radius
=3.14*1.25*1.25
=4.90625cmsquare

2006-11-05 03:39:56 · answer #4 · answered by Girish.J. 2 · 2⤊ 0⤋