a verandah of width 1.2 m is constructed all along outside a room which is 5.5 m long and 4.2 m wide find the area of verandah and the cost of cementing the floor of verandah at 160 rs per square m.
Answers
Answer:
Area of verandah is 40.92 sq m. and cost of cementing the floor of verandah is Rs.6547.2
Step-by-step explanation:
Length of room=5.5 m.
Width of room=4.2 m.
Area of room =5.5*4.2 (Area of rectangle=length*width)
=23.1 sq m.
Width of verandah=1.2 m.
Length of room including verandah=5.5+2*1.2(we multiply the width of verandah with 2 as it is constructed on both sides of length)
=5.5+4.2
=9.7 m.
Width of verandah=4.2+2*1.2
= 4.2+2.4
=6.6 m.
Area of room including verandah=9.7*6.6
=64.02 sq m
Area of verandah=area of room including verandah-area of room
=64.02-23.1
=40.92 sq m.
Cost of cementing the floor of verandah=Rs.160 per sq m.
Cost of cementing 40.92 sq m verandah=Area of verandah*cost of cementing the verandah per sq m
=160*40.92
=Rs. 6547.2