Q2. A rectangular sheet is folded along its length to make a right circular cylinder. If ratio between magnitude of area of rectangular sheet to the magnitude of volume of cylinder is 1 : 7. Then find the radius of cylinder.
Q4. The second largest side of a right angled triangular field is 5 cm less than the length of another rectangular field of area 294 cm² and having the ratio of length to breadth is 3 : 2. The largest side of right angled triangular field is 4 cm more than the side of a square field having perimeter 64 cm. Then, find the area of the triangular field.
(a) 8 cm²
(b) 4 cm²
(c) 90 cm²
(d) 80 cm²
(e) 96 cm²
Q7. A solid cone of radius 13 cm & height 16 cm is re-casted into n hemispherical bowls of outer diameter 16 cm & inner diameter 14 cm. Find n?
Q11. How many numbers of five digits can be formed by using the digits 0, 1, 2, 3, 4, 5, 6 and 7 if repetition of digits is not allowed?