A square painting has a length of 62 cm. What is the area of the painting?
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Recallin that, the diameter is twice as long as the radius, namely the radius is half the diameter, so, if the diameter is doubled, the radius is also doubled.
notice, the new volume is 4 times (πr² h), namely 4 times the original.
notice, the new volume is 4 times (πr² h), namely 4 times the original.