Answer:
(a+b)²=a²+2ab+b²
Step-by-step explanation:
Hope this helps!!!
Circumference of a circle = 2πr
So,

Step-by-step explanation:
Since SP=TR, the differnce of PR and ST 24-15 divided by 2 is the length of PD (4.5)
Try to understand the rest from the attached picture