Question

The sides of a triangle are x, 2x + 1 and x + 2 for some positive rational
number x. If one angle of the triangle is 60°, what is the perimeter of the
triangle?​

Answer 1

Answer:

The figure below shows a solid shape. Observe the figure carefully and answer the questions given below

i) Which shape has been shown in the figure above?

a) Cylinder b) Cuboid c) Cone d) Cube

ii) What will be the surface area of this cube if its each edge

measures 9cm?

a) 486 cm2 b) 324 cm2 c) 729 cm2 d)406 cm2

iii) If all the edges of the cube needs to be covered by a thin

black tape, what will be the length of the tape required if

each edge measures 9cm?

a) 72cm b) 108cm c) 36cm d) 216cm

iv) What would be the length of the longest rod which could be

fit inside this cube if it was hollow from inside and its each

edge measures 9cm?

a) 3√3 cm b) 6√3 cm c) 9√3 cm d) 12√3 cm

v) If this cube, had an edge 12cm, and was cut into 8 small

cubes of equal size, what would have been the length of

edge of each small cube so formed?

a) 4cm b) 6cm c) 8cm d) 10cm