Calculate, correct to 2 significant figures, the length o...
Calculate, correct to 2 significant figures, the length of the arc of a circle of radius 3.5cm which subtends an angle of 75° at the centre of the circle. [Take π = 22/7].
2.3cm
4.6cm
8cm
16cm
16cm
Correct answer is B
Length of arc = θ360×2πr
= 75360×2×227×3.5
= 4.583cm
≊ 4.6 cm (to 2 sig. figs)
Each of the interior angles of a regular polygon is 140°. How many sides has the polygon? ...
In the diagram, QP//ST:PQR = 34o qrs = 73o and Rs = RT. Find SRT ...
Evaluate \int 2(2x - 3)^{\frac{2}{3}} \mathrm d x ...
In the diagram, TS is a tangent to the circle at S. |PR| and < PQR = 177o. Calculate < PST....
If P344_{6} - 23P2_{6} = 2PP2_{6}, find the value of the digit P. ...
The difference between the length and width of a rectangle is 6cm and the area is 135cm². What ...
Which of the following is true for the set P = \{-3.2\leq x< 5\} where x is an integer...
An (n - 2)2 sided figure has n diagonals. Find the number n diagonals for 25-sided figure...