Question
Calculate the area of a circle whose radius is (7/8)ᵗʰ
of the side of a square whose area measures 1,600 cm². (Take π = 3.14)Solution
ATQ,
Area of square = side²
So, side² = 1,600
Or, side = ±40
But side cannot be negative. So, side = 40 cm
Radius of circle = (7/8) × 40 = 35 cm
Area of circle = π × radius²
Therefore, required area = (3.14) × 35² = 3,846.5 cm²
Select the option that represents the letters that, when placed from left to right in the blanks below, will complete the letter series.
A C _ G ...
Three of the following number-pairs are alike in some manner and hence form a group. Which number-pair does not belong to that group? (NOTE: Operations ...
Taka : Bangladesh :: Lira : ?
Four number-pairs have been given, out of which three are alike in some manner and one is different. Select the number-pair that is different.
Statements:
Some bricks are metals.
All metals are shiny.
No shiny thing can float.
Conclusions:
(I) Some metals ...
How many persons live between L and K?
Which of the following numbers will replace the question mark (?) in the given series?
7, 15, 30, 62, 125, 253, ?
Select the combination of numbers that when placed sequentially in the blanks of the given series will complete the series.
k l _ n _ p q _ l _ n...
IF 'NOISED' is coded as 'PRMQBZ', how will ‘GARDEN’ be coded as in the same code?
'A & B’ means ‘A is the sister of B’.
‘A – B’ means ‘A is the mother of B’.
‘A × B’ means ‘A is the husband of B’...