Answer:
9.5 cm
Step-by-step explanation:
Perimeter means the sum off all the sides for a shape.
ADC is the shape that is created by the corners labelled with A, D and C.
We are talking about the triangle on the left.
Each of the three sides are labelled in the diagram. Add the sides together for the perimeter.
You can also find the perimeter with a formula to show your work:
P = s₁ + s₂ + s₃
= AC + CD + AD Label for each of the three sides
= (3.5cm) + (3cm) + (3cm) Add these together
= 9.5 cm Answer
Therefore the perimeter of ADC is 9.5 centimetres.
