Question

I need help PLEASE :(

Answer 1

10 cm

Explanation:

in a rectangle, diagonals bisect each other. you'd only have to divide bd by 2 aka 20/2

Answer 2

Answer:the length of OB is 10 cm

Explanation:

The given figure is a rectangle. In a rectangle, the opposite sides are equal. The diagonals of the rectangle are equal and they bisect each other at the midpoint of the rectangle. This means that BO = DO and AO = CO.

BD = OB + DO

And OB = BD/2

Since BD = 20 cm

OB = 20/2 = 10 cm