Question

... plzzz help me brainly members

Answer 1

Answer:

area of triagle is 1/2xbasexheight

area of  triangle dbc

pythagoras theorem

dc squarr=base square+hight square

17 square=8 square+bd square

289=64+bd square

289-64=bd square

225=bd square

root of 225=bd

15=bd