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해법
솔루션 단계
Translate the problem into an equation:
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The diameter of a circle is 4 in. Find its 원둘레 in terms of pipi.The 지름 of a circle is 8 cm. Find its area in terms of pipiThe sum of two numbers is 2727. Half the larger number increased by three is same as the smaller number. Find the numbers.The 차이 between nine times a number and one more than two times the numberFind the area of a circle with a 지름 of 56 millimeters. Round your answer to the nearest hundredth.