What is the area of the following circle? d = 8

The perimeter of an equilateral triangle is 4 cm more than the perimeter of a square and the length of a side of the triangle is 8 cm more than the length of a side of the aware. find the length of a side of the equilateral triangle

Cos^2x+cos^2(120°+x)+cos^2(120°-x)i need this asap. pls me

Tatiana reads 40 pages of her book every night for x number of nights. write an expression that shows the number of pages she has read