Find the approximate surface area of a cylinder with radius r=7cm and height h=9cm

Need this asap if anyone can i would be very grateful. if you could show workings that would really

Agraphic designer created a logo on eight and a half by 11 inch paper. in order to be placed on a business card, the logo needs to be one and 7/10 inches by 2 and 1/5 in. what is the scale factor of the dilation

If x-1 and x+3 are the factors of x3+10x2+ax+b find a and b