Answer:
10cm Base
Explanation:
Actually the answer is 10 cm for the base.
First step is take 1600cm2 and divide it by 4 (or how many pendents you have) so it'll look like this
1600/4 =400cm2
Then you need to find the area of the Triangles.
Area of the Triangle=1/2xbase xheight
400=1/2xbx80
400=40xb
10=b