<u>Answer:</u>
BC = 18 cm
<u>Step-by-step explanation:</u>
As we can see from the diagram:
AB + BC + CD = AD
⇒ 10 cm + BC + 11 cm = 39 cm
⇒ BC + 21 cm = 39 cm
⇒ BC = 39 cm - 21 cm
⇒ BC = 18 cm
14 and 15
14^2 = 196
15^2 = 225
225+196 = 421
Centimeter is bigger than millimeter
Answer:
the answer would be 8s -8
Step-by-step explanation:
I learned this a long time ago