Question

The central hall of a school is 18 m long and 12.5 m wide. A carpet is to be laid on the floor
leaving a strip of 50 cm width from the walls uncovered. Find the area of the carpet and also
of the uncovered portion of the floor.​

Answer 1

Answer:

7.8 is the answer please mark me brainlist answer

Answer 2

Step-by-step explanation:

area of the Central hall of a school

$18m \times 12.5m = 225m {}^{2}$

the carpet laid on the floor leaving a strip of 0.5 m (50 cm) width from the walls uncovered is

$18m -0.5m - 0.5m = 17m$

area of the carpet covered is

$12.5 m\times 17m = 212.5m {}^{2}$

area of the uncovered portion of the floor is

$225m {}^{2} - 212.5m {}^{2} = 12.5m {}^{2}$