To find the distance around a circular disc, multiply the diameter of
the disc by 3.14. What is the distance around the disc when :
(a) the diameter is 18.7 cm?
(b) the radius is 6.45 cm?
The largest square that can be drawn in a circle has a side whose
length is 0.707 times the diameter of the circle. By this rule, find the
length of the side of such a square when the diameter of the circle is
(a) 14.35 cm (b) 8.63 cm
A rule for finding the approximate length of diagonal of a square is
to multiply the length of a side of the square by 1.414. Find the
length of the diagonal when :
(a) The length of a side of the square is 8.3 cm.
(b) The length of a side of the square is exactly 7.875 cm
In a class of 40 students, 1/5 of the total number of students like to eat rice only, 2/5 of the total number of students like to eat chapati
only and the remaining students like to eat both. What fraction of the total number of students like to eat both?
What happens to the value of a fraction if the denominator of the
fraction is decreased while numerator is kept unchanged?
If 5 is added to both the numerator and the denominator of the fraction 5/9, will the value of the fraction be changed? If so, will the
value increase or decrease?
State whether the statement is True or False.
1 is the only number which is its own reciprocal.
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