Answer:
Area of extension is, 32.625 sq. metre
no. of tiles needed = 522
no. of complete package of tiles needed = 20
Step-by-step explanation:
Area of the patio
= [tex]6.25^{2}[/tex] sq. metre
= 39.0625 sq. metre
Area of the patio ( with extension)
=[tex](6.25 + 2\times 1.5) \times (6.25 + 1.5)[/tex] sq. metre
= 71.6875 sq. metre
So,
area of the extension ,
= (71.6875 - 39.0625) sq. metre
= 32.625 sq. metre
Area of a tile
= [tex]0.25 \ times \0.25[/tex] sq. metre
= 0. 0625 sq. metre
So, number of tiles needed,
=[tex]\frac{32.625}{0.0625}[/tex]
=522
no of complete package of tiles needed,
[tex][\frac{522}{25}][/tex]
= 20
