1. A wooden bowl is in shape of a hollow hemisphere of internal radius 7 cm and thickness 1 cm. What is the total surface area (in sq.cm) of the bowl? (Take: = 22/7)
4. In an isosceles ?ABC, AD is the median to the unequal side meeting BC at D. DP is the angle disector of ?ADB and PQ is drawn parallel to BC meeting AC at Q. Then the measure of ?PDQ is
9. A cone of radius 7 cm and height 12 cm is completely filled with water. This water is emptied into an empty cylindrical vessel of radius 3.5 cm. What will be the height of water in this vessel?