Question

the Central Hall of a school is 18m long and 12.5 M wide. a carpet is to be laid on the floor leaving a strip 50 cm wide near the wall UN covered. find the area of the carpet and also the uncovered portion

Answer 1

Solution:-

Portion uncovered = 50 cm = 0.5 m
Length of the carpet = 18 m - (0.5 m + 0.5 m) = 17 m
Breadth = 12.5 m - (0.5 m + 0.5 m) = 11.5 m
Area of the carpet = 17*11.5
= 195.5 sq m
Area of the hall = 18*12.5
= 225 sq m
Now area of the uncovered portion = area of the hall - area of the carpet
= 225 - 195.5 
Area of the uncovered portion = 29.5 sq m

Answer 2

Answer:

Hey mate....am here to answer you!!!

Step-by-step explanation:

side of small square = 45m

so,area of a small square

=side×side

=45×45

=2025 square meters

side if big square

=45×2×(2.5)

=45+5.2

=50m

THEREFORE;area of a big square

=50×50

2,500 square meters

hope it helped if yes full fill ❤❤❤and