Question

Only need help on #20 & #21 answer step by step if u can

Answer 1

Step-by-step explanation: 22

tan30° =
`(12)/(x)` ⇒
`(√(3) )/(3)` =
`(12)/(x)` ⇒ x = 12√3

c = √(12√3)² + 12² = 24

P= a+b+c = 12√3 + 12 + 24 = 36+12√3