The perimeter of the rectangle is 64 cm. Find its area if the width is 140mm
| December 16, 2020 | education
144mm = 14.4cm
the area of the rectangle is S = ab, the perimeter of the rectangle is P = 2a + 2b, then
P = 2a + 2b; = 64 = 2a + (14.4 * 2) = 2a + 28.8; 2a = 35, 2; then a = 35.2: 2 = 17.6, then
S = ab = 17.6cm * 14.4cm = 253.44 (cm2)
Answer: 253, 44 (cm2)
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