The radii of the bases of two cylinders are in the ratio of 2 : 3 and their heights are in the ratio of 5: 3. The ratio of their volumes is
7 : 6
10 : 9
4 : 9
20 : 27
The perimeter of a trapezium is 104 cm, the lengths of its non-parallel sides are 18 cm and 22 cm and its altitude is 16 cm. The area (in cm) of the trapezium is
1024
640
512
320
C.
512
According to the question,
If each edge of a solid cube is increased by 150%, the percentage increase in the surface area is
525
225
625
150
The values of y for which the 4-digit number 51y3 is divisible by 9 is
2 or 3
0 or 9
0 or 3
3 or 9
The sum of all interior angles of a regular convex polygon is 1080°. The measure of each of its interior angles
1080
1350
720
1200