December 2020
Intermediate to advanced
255 pages
9h 16m
English
Content preview from Pearson IIT Foundation Class 6 Mathematics by Pearson
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Powers and Roots
4.17
HINTS AND EXPLANATION
40. Given that the number of classrooms is equal to
the number of benches in each classroom.
The total number of benches in all the classrooms
is equal to 196.
And also given that the number of classrooms
= 196 =
27
22
× = 2 × 7 = 14
∴ The number of benches in each classroom = 14
41. Given that the total surface area of a cube is equal
to 6 times the square of the edge of the cube. The
total surface area of the cube = 384 sq. cm.
Square of the edge = 384/6 = 64
∴ The length of the edge of the cube
= 64 = 8
2
= 8 cm
42. Given that the volume of a solid dice is equal to
the cube of its edge ...
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