CHAPER VIII -CALCULATIONS REGARDING EXCAVATIONS. 69 hestax. That (platform) is built up of bricks. 0 you who know calculation, say how many bricks there are (in it). 46४. A raised platformn, equilaterally triangular (in section), havng 8 Hast¢8 (as its side measure), and 9 haxies as height, has been constructed with the aforesaid bricksCalculate and say how many bricks there are in this (structure) 47]. A raised platform, circular in section, having a diameter of 8 host and a height of 9 icata8 is built up with (the same aforesaid) brick8. 0 you who know calculation, kay how many bricks there are in it. 48. In the case of (a raised platform having) an oblong (section), the length is 60 hostethe breadth 25 hxts, and the height is 6 ydata8. Give out in this case the measure ot that brick pile. 49. A boundary wall is 7 Instice in thickness, 24 hosted in length and 20 hrsta8 in height. How many are the bricks used in building i% ? 50. The thickness of a boundary Wall is 6 ha88 at the top and 8 hast8 at the bottom ;its length is 24 last8 and height 20 hasta8. How many are the bricks used in building it? (In the case of a raised sloping platform), the heights are (respectively 1216 and 20 heads (ot three different points) ; 50-514 In finding out the cubical contents of the wall, the average breadth calculated accor ding to the rule given in the lat ter half of stanga 4 above, is used; 8o the German ko value is taken into con• sideration here. 20 51 Thi 16 eloping platform 12 is bounded at its two ends by two vertical planes, the top and bhe side 8orfaces alone being sloping. The top 24 forms an inclined
