CHAPTER Ix .--CALCULATIONS BBLACING TO SHADows. 281 & An example in lustration of the (le a he) letter half (of Bhe stamsa) 25. A pillar i 20 hrstas (in height) and the (portion of its) sha. dow on a wall is 16 (aqsta8 in height). The measure of the inter space between the wall and the pillar is 8 (hosts). What is the measure of the human shadow (in terms of the mans height) ? 'The rule for arriving at the numerical value of the height of a pillar, when the numerical measure of the (portion of its) shadow 0ast on (a wall and the measure of the interspace between (that) pillar and (that) wall, and also the human shadow (in terms of the human height) are known. 26. I'he measure of the (pillar-shadow) cast on (the wall) is multiplied by the measure of the human shadow (in terms of the human height) ; and to this product the measure of the interspace between the pillar and the wall is added The quotient obtained by dividing (the sum 80 resulting) by the measure of the human shadow (in terms of the human height) is made out by the wise to be the measure (of the height) relating to the pillar. An example in illustration thereof. 27. The measure of (the height of the portion of) the pillar shadow cast on the wall is 16 (hasta8). The value of the human shadow (at the time) is only twice (tho human height). The measure of the interspace between the wall and the pillar boing 8 (astes), what is the height of the pillar? te rule for separating the measure (of the height) of the style and the measure of (the length of the shadow of the style from (their given) combined sum :- 28. The combined sum of the measure of the style and the measure of the shadow (thereof), when divided by the measure of the human shadow (in terms of the human height) as increased by ome, gives rise to the measure of the height of the style. The measure of the shadow of the style is of course the (given) combined sum diminished by this (measure of the style) . 26. yade note unde1 stanz8 28 above 28 and 80. The rules here given are based on the ruld stated in bhe latter half of the heDEana 12 above. 88
