c) A businessman deposited Rs 60,000 in a Commercial Bank at 4.5% p. a. How long should he deposit the sum to receive an amount of 61,350?​

It would take 5 months long to receive an amount of 61,350?.

Step-by-step explanation:

P = Rs 60,000

R = 4.5%

T = ?

A = Rs 61,350

so

I = A-P

or, I = Rs 61,350 - Rs 60,000

so, I = Rs 1,350

so

T = (I×100)/P×R

T = (1350×100)/(60,000×4.5)

or, T = 135000/270000

so, T = 0.5 years = 5 months

d 25 pi/6

step-by-step explanation:

the diameter is 10 inches

the radius is 1/2 of the diameter or 5 inches

the area of the circle is

a = pi r^2

  = pi 5^2

  = 25 pi

the slice is 60 degrees of the entire circle.

60 degrees out of 360   60/360 = 1/6

the area of the slice is 1/6 of the circle

a slice = 1/6 a circle

a slice = 1/6 * 25 pi