The base of a triangle is 10 cm greater than the height. the area is 28 cm2. find the height and the
base.

Ok, so first work backwards. How do you work out the area? Height x Base/ 2 = area. The area is 28. So 28 x 2 = 56. Now what x what = 56. The first thing that comes to my mind is 4. So what x 4 = 56. 56/4 = 14. 14 is also 10 greater than 4. So the height of the triangle is 4cm, the base of the triangle is 14cm and the area is 28.

Height = 4cm
Base = 14cm

I hope this helped :)