Question
The area of a square is 3,600 cm². Find the area of a
circle whose radius is (2/3)ᵗʰ of the side of the square. (Use π = 3.14)Solution
ATQ,
Area of square = side²
⇒ side² = 3,600
⇒ side = √3600 = 60 cm
Radius = (2/3) × 60 = 40 cm
Area of circle = 3.14 × 40² = 3.14 × 1,600 = 5,024 cm²
- From a standard deck of 52 playing cards, two cards are picked at random. What is the probability that both cards drawn are red cards?
A box contains 4 red, 5 blue and 3 green balls. Two balls are drawn at random without replacement. Find the probability that both balls are of the same ...
Ten tickets numbered 1 to 15 are placed in a box, mixed up thoroughly and then one ticket is drawn randomly. If it is known that the number on the drawn...
A box contains 8 yellow marbles, ‘x’ blue marbles and 12 white marbles. A box contains 5 yellow marbles, 2 blue marbles and 3 white marbles. The pro...
From a pack of 52 cards, One card is drawn at random. What is the probability that the card drawn is a king or a heart?
A bag contains ‘x’ black balls, ‘x + 2’ red balls and ‘x + 1’ white balls. If the probability of drawing a white ball is 1/36 less than the ...
- A piggy bank contains six 50 paise coins, nine Rs. 1 coin, and twelve Rs. 2 coins. One of the coins from the piggy bank fell and got lost. Find the probabi...
A bag contains 4 black balls, 6 white balls and 5 red balls. Two balls are drawn simultaneously. Find the probability that both the balls are of same c...
There are is chest containing only diamond and emeralds in the ratio 2:5. When 2 of them are picked at random form the chest, the probability that both ...
Two cards are drawn from a pack of 52 cards. The probability that 1 is Ace and 1 is Queen is?
Relevant for Exams:
