An irrational number is any number that is a real number, a full number or whole one, and that can`t be shown as a ratio. It is a number that cannot be shown as a simple fraction. An irrational number is one that is shown as a repeated decimal or fraction.
Answer:
A
Step-by-step explanation:
RT=12
TU=5
RU=12+5=17
RS=17+7=24
SU=√(RS²-RU²)=√(24²-17²)=√(24-17)(24+17)=√(7×41)=√287
area=1/2×12×√287=6×√287≈101.6 unit²
