If the diagram is the graph of y = x2, the shaded area is
64 square units
1264 square units
32 square units
643 square units
Correct answer is D
A = ∫x=4x=0 ydx = ∫40 x2dx = [x33+c]40
= 643 square units
In the diagram, If < RPS = 50o, < RPQ = 30o and pq = QR, Find the value of < prs
50o
60o
70o
80o
Correct answer is C
< QPR = < PRQ = 30o (PQ = QR)
< SPQ + < QRS = 180o (supplementary)
80 + < QRS = 180o = < QRS = 180o - 80o = 100o
< QRP + < PRS = 100o = 30o + < PRS = 100o
= < PRS = 100o - 30o = 70o