Find the length of the largest rod that can be placed in a room 16 m long, 12 m broad and 15m. high,
1). 25 m
2). 28 m
3). $22\frac{2}{3}$m
4). 35 m
Area of a square is 64 m2. If its perimeter is doubled then the new area of the square (in m2) is
1). 128
2). 192
3). 256
4). 320
D and E are points on side AB and AC of ΔABC. DE is parallel to BC. If AD : DB = 2 : 3 and area of ΔABC is 100 sq cm, what is the area (in sq cm) of quadrilateral BDEC?
If the length of each side of a regular tetrahedron is 24 cm, then the volume of the tetrahedron is
1). 1452√2 cu. Cm
2). 1152√2 cu. Cm
3). 1158√2 cu. cm
4). 1512√2 cu. cm
Let A and B be two solid spheres such that the surface area of B is 800% higher than the surface area of A. The volume of A is found to be k% lower than the volume of B. The value of k is approximately?
1). 96
2). 92
3). 86
4). 83