Question

"A space of 3 mx 15 m is cut for a door
from a wooden wall of dimensions 14 m
x 8 m.
A. An iron plate needs to be fixed all around
the wooden wall to protect it from moisture.
Find the length of the iron plate.
B. Find the cost of polishing the wall at the rate
of 375 per sq m.​

Answer 1

Answer:

Area of wooden wall = 14x8 = 112 m²

Area of door = 3x15 = 45 m²

Area of wooden wall with iron plate = 112 - 45 = 67 m²

Cost of polishing the wall ;

1 m² = Rs. 375

67 m² = Rs. 375x67 = Rs. 25,125