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2014 AMC 10A Problem 23

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2014 AMC 10A Problem 23AMC 10 Step by Step

Name: Date: September 13, 2026

Transformations & Symmetry · difficulty 4 of 5 · about 6 min · position P21-25

A rectangular piece of paper whose length is $\sqrt3$ times the width has area $A$ . The paper is divided into three equal sections along the opposite lengths, and then a dotted line is drawn from the first divider to the second divider on the opposite side as shown. The paper is then folded flat along this dotted line to create a new shape with area $B$ . What is the ratio $B:A$ ?

A)
$1:2$
B)
$3:5$
C)
$2:3$
D)
$3:4$
E)
$4:5$

2014 AMC 10A Problem 23

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