Tom got his floor covered with square tiles and used black colored square tiles to border the room as shown - Maths - Mensuration

Question

Tom got his floor covered with square tiles and used black colored
square tiles to border the room as shown in the figure Each square
tile is of side 1 2 m

What is the perimeter of the border of his room?
(A) 12 m (B) 14 m (C) 16 m (D) 18 m

Neha Sethi · Accepted Answer

Dear student
<img alt="" src=
"https://s3mn%20mnimgs%20com/img/shared/content_ck_images/ck_5a9bb53248ad5%20png"
style="width: 194px; height: 163px;">
Clearly we can see that side AB consists of 7 black square tiles each of side 12 mSo length of AB=7×length of black square tile=7×12=3
5 mNow perimeter of border of room=4×AB   Perimeter of square =4×s , where s is the side of square
=4×3 5=14 m
Regards

Tom got his floor covered with square tiles and used black colored square tiles to border the room as shown in the figure. Each square tile is of side 1 2 m. What is the perimeter of the border of his room? (A) 12 m (B) 14 m (C) 16 m (D) 18 m

Tom got his floor covered with square tiles and used black colored square tiles to border the room as shown in the figure. Each square tile is of side $\frac{1}{2}$ m.

What is the perimeter of the border of his room?
(A) 12 m (B) 14 m (C) 16 m (D) 18 m