Question

a room is 10.2 m long 8.5 m wide and 4.6 m high it has a door measuring 1.5 m into 2.6 m and a window measuring 2m into 1.7m find the cost of tiling the wall @ 13.50

Answer 1

Area of the 4 walls = 2(l+b)×h sq. units
= 2(10.2+8.5)×4.6 m sq.
= 2×18.7×4.6 m sq.
= 172.04 m sq.

Area of a door = l×b sq. units
= 1.5×2.6 m sq.
= 3.9 m sq.

Area of a window = 3.4 m sq. [ l×b ]

Total tilling area = Area of 4 walls- (area of a
door + area of a window)
= 172.04 - (3.9 + 3.4) m sq.
= 164.74 m sq.

Total cost = Rs. (13.50×164.74)
= Rs. 2223.99
= Rs. 2224

Answer 2

Answer:

= Rs. 2224

Step-by-step explanation:

Area of the 4 walls = 2(l+b)×h sq. units

= 2(10.2+8.5)×4.6 m sq.

= 2×18.7×4.6 m sq.

= 172.04 m sq.

Area of a door = l×b sq. units

= 1.5×2.6 m sq.

= 3.9 m sq.

Area of a window = 3.4 m sq. [ l×b ]

Total tilling area = Area of 4 walls- (area of a

door + area of a window)

= 172.04 - (3.9 + 3.4) m sq.

= 164.74 m sq.

Total cost = Rs. (13.50×164.74)

= Rs. 2223.99

= Rs. 2224