Work out the surface area of this cylinder radius 2cm and height 4cm pls help​

Select the lengths in centimeters that would form a right triangle

The area of a rectangle is 10 cm^2. one side of the rectangle is x cm. express the perimeter of the rectangle in terms of x and show that this rectangle cannot have a perimeter of 12 cm. the perimeter of the rectangle in terms of x is __ cm

If t17 = 3 (t5) in an arithmetic progression, find t1 in terms of d.