For my Sec 1 sister Express homework.
Q1.Express
(a) 0.0052785 correct to three significant figures,
(b) $478.93 correct to the nearest $10,
(c)0.02734cm^3 in mm^3
Q2. (a) Find the lowest common multiple of 54 and 60.
(b) Two athlets A and B start their long distance race together
afrom the starting point of the 400-metre running track at 0655.
Given that athlete A take 54s to complete one round and sthlete B
take 60s to complete one round,at what time will they next meet at
the starting point?
Q3 Two towns,A and B,are 27.5km apart. A cyclist leaves A at noon
and rides toward B at a steady speed of 15km/h for 50 min. He then
contimues the rest of his journey at a steady speed of 12km/h.
Calculate the time of arrival of B.
Q4. In a hexagon,three of the angles are 123,132 and 150 and the
other three angles are equal. Calculate one of the equal
angles.
Q5.Slove the equation X/2 - 3/4 = 2/3 x -1.
(B) Given that p=2,q=-1 and r=0.5,calculate the value of
PQ-2/R
Q6. A solid cylinder has a height of 20cm and a base of radius
14cm.Taking pie to be 22/7,calculate
A) its volume
B) its total surface area.
