a room is 6 m long 5m wide and 4 m high. the doors and windows in the room occupy 4 square metres of space find the cost of papering the remaining portion of the walls with paper 75cm wide at the rate of 2.40 per metre

273.6

Step-by-step explanation:

Surface area of the room

= 2(lb+bh+oh)

= 2(5*4+6*4+6*5)

= 2(20+24+30)

= 2*74

= 148 m^2

Area of door= 4m2

Remaining area = 148-4

= 114 m^2

Cost for 1m square= 2.40

Cost for 114m square= 2.40*114

= 273.6

Rs 460.80

Step-by-step explanation:

AREA OF ROOM

=2*(6*5)+2*(5*4)+2*(4*6)                       =60+40+49                     

=148M^2

WALL TO BE PAPERED

=(148 - 4) = 144M^2

PAPER TO BE USED=14400/75                           

= 192 PAPERS

COST= 192 x 2.40 = 460.8 RS

step-by-step explanation:

i am not sure sorry : c

answer: the value should be used for i in the formula of calculation the monthly payment , the interest rate per period is 0.85.

step-by-step explanation:

the given rate of interest i= 85%

in calculating the monthly payment for a loan with an interest rate compounded monthly, the value of the interest rate per period we use in the formula must be in decimal form.

to convert it in decimal, we divide it by 100, we get

hence, the value should be used for i in the formula of calculation the monthly payment , the interest rate per period is 0.85.