Question

one side of a rectangular field of area 0.55 half is 25 find the other side in the mid term one side of a rectangular field of area 0.5 hectare is 125 metre find the other side in metres ​

Answer 1

Answer:

one side of a rectangular field in the mid term one side of a rectangular field of area 0.5 hectare is 125 meter

Answer 2

Answer:

''A lamp giving out 1200 lm in all directions is suspended 8 m above the working plane. Calculate the illumination at a point on

the working plane 6 m away from the foot of the lamp.'''

import math as m

I = 1200/(4*3.14) #Cd (luminous intensity of lamp)

h = 8.0 #m (height)

b = 6.0 #m (breadth)

length = m.sqrt(h**2 + b**2) #m

cosQ = h/length

E = I*cosQ/length**2 #lm/m^2

print "Illumination at point =",round(E,2),"lm/m^2 ."

Illumination at point = 0.76 lm/m^2 .

EXAMPLE 49.2 , PAGE NO :- 1899