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Unknown column 'cache_on' in 'field list'

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The area of triangle is the measure of the\nplane that is covered by the sides.\nNow the problem is How to Find the Area of a Triangle, as we discussed above there are five\nto six ways to find the area of triangle.\nLet’s discuss some ways one by one\nMethod 1: - Formula is area = 1⁄2 * bas * height\nWhere b is base\nh is height\nb and h is always perpendicular to each other.\nIf we have b\' s and h\'s value then we will put the value into the formula\nThen multiply the base by the height, and then divide by it by two.\n\";s:5:\"thumb\";s:52:\"images/t/2493/how-to-find-the-area-of-a-triangle.jpg\";s:6:\"thumb2\";s:53:\"images/t2/2493/how-to-find-the-area-of-a-triangle.jpg\";s:9:\"permalink\";s:34:\"how-to-find-the-area-of-a-triangle\";s:5:\"pages\";s:1:\"4\";s:6:\"rating\";s:1:\"0\";s:5:\"voter\";s:1:\"0\";}i:8;O:8:\"stdClass\":13:{s:2:\"id\";s:6:\"253586\";s:6:\"status\";s:8:\"verified\";s:11:\"author_name\";s:15:\"tutorciecleteam\";s:9:\"author_id\";s:5:\"78247\";s:14:\"author_website\";s:0:\"\";s:5:\"title\";s:34:\"How To Find The Area Of A Triangle\";s:11:\"description\";s:472:\"How To Find The Area Of A Triangle\nTo find the area of triangle, there are various ways. The area of triangle is the\nmeasure of the plane that is covered by the sides.\nNow the problem is How to Find the Area of a Triangle, as we discussed above there\nare five to six ways to find the area of triangle.\nLet’s discuss some ways one by one\nMethod 1: - Formula is area = 1⁄2 * bas * height\nWhere b is base\nh is height\nb and h is always perpendicular to each other.\";s:5:\"thumb\";s:54:\"images/t/2536/how-to-find-the-area-of-a-triangle-1.jpg\";s:6:\"thumb2\";s:55:\"images/t2/2536/how-to-find-the-area-of-a-triangle-1.jpg\";s:9:\"permalink\";s:36:\"how-to-find-the-area-of-a-triangle-1\";s:5:\"pages\";s:1:\"4\";s:6:\"rating\";s:1:\"0\";s:5:\"voter\";s:1:\"0\";}i:9;O:8:\"stdClass\":13:{s:2:\"id\";s:6:\"295331\";s:6:\"status\";s:8:\"verified\";s:11:\"author_name\";s:14:\"mukeshchand744\";s:9:\"author_id\";s:6:\"125181\";s:14:\"author_website\";s:0:\"\";s:5:\"title\";s:34:\"How to Find the Equation of a Line\";s:11:\"description\";s:595:\"The representation of any line is generally done with the help of its equation. So we will discuss here some of the ways to understand about How to Find the Equation of a Line. The answer of the question that how to find the equation of a line lies in the fact that what information is being given to us. There can be different conditions for example we can find the equation of a line if we are given the information about a point which lies on the line and the slope of the line. Also the equation of the line can be found if we have the knowledge about any 2\npoints which exist on the line...\";s:5:\"thumb\";s:52:\"images/t/2954/how-to-find-the-equation-of-a-line.jpg\";s:6:\"thumb2\";s:53:\"images/t2/2954/how-to-find-the-equation-of-a-line.jpg\";s:9:\"permalink\";s:34:\"how-to-find-the-equation-of-a-line\";s:5:\"pages\";s:1:\"4\";s:6:\"rating\";s:1:\"0\";s:5:\"voter\";s:1:\"0\";}}', `cache_on` = '2015-02-28 08:56:12' WHERE `aff_id` = '555128'