Question

20) Find the area of a rhombus whose diagonals are 13cm and 20cm

21) Find the area of a circle whose circumference of a circle is 28

22) In a box, there are 9 red, 8 white and 7 black balls. Find the probability of obtaining

i) A red colored ball
ii) a white colored ball
!!!) neither red or nor white colored ball​

Answer 1

Answer:

54 is the area

Step-by-step explanation:

area

a

a

a

a

a

Answer 2

Answer:

20. area of rhombus = 130 cm²

22. the probability of obtaining a red coloured ball is 9/24

ii) the probability of obtaining a white voloured ball is 8/24

iii) the probability of getting neither red nor white is 7/24

Step-by-step explanation:

we know that,

area of rhombus = ½×( product of diagonal )

therefore, ½× 13×20 cm²

= (½× 260) cm²

= 130 cm ²

22. probability= favourite happenings / total no. of outcomes