How many tiles are needed to cover a square patio measuring 18 ft on a side if each tile covers 1 square ft

324 tiles.

Step-by-step explanation:

Close you eyes and try and imagine a row that contains 18 tiles. In order to cover the patio, you need 18 such rows.

Tiles = 18 * 18

Tiles = 324 tiles

a. 32 degrees

step-by-step explanation:

here we have to use the rule.

m∠e = 1/2 (major arc - minor arc)

m∠e = 1/2 (212 - 148)

m∠e = 1/2 (64)

m∠e = 32 degrees

answer: a. 32 degrees

you