8 a construction

Construction - 8 - To construct a perpendicular to a line at a point on it A line AB and a point O on it. A perpendicular to AB at O. (i) With O as centre and any suitable radius, draw arcs to cut AB at points S and T. (ii) Take radius equal to more than half the lengt..

To construct a perpendicular to a line at a point on it A line AB and a point O on it. A perpendicular to AB at O. (i) With O as centre and any suitable radius, draw arcs to cut AB at points S and T. (ii) Take radius equal to more than half the length of ST. (iii) With this radius, taking..

Construction - 15 - To construct a triangle when the sum of two sides, the remaining side and the angle between them are given (We assume that the given angle can be constructed with ruler and compass alone) In BC = 3.8 cm, and AB + AC = 6.5 cm (1) Draw BC = ..

>(iii) With S as centre and radius equal to DE draw an arc to cut this arc at T. (iv) Join QT and produce it to ..

Construction - 12 - To construct when , AC = 4 cm, BC = 4.8 cm, two sides and the angle opposite to one of them are given. (1) Draw a straight line AX (2) At A, Construct (3) From A, cut off AC = 4 cm. (4) From C, cut off CB = 4.8 cm, B lying on AX...

A circular wall of radius 2 m and thickness 30 cm is to be constructed to a total height of 0.8 m. Bricks of measurement 15 cm × 8 cm × 8 cm are to be used. How many bricks would be needed? [Take π = 3.] => 3281 or 3312 or 3248 or 3225..

A frequency distribution of the duration of telephone calls monitored at the local telephone exchange are shown. Length of calls(minutes) Number of calls 2.5 - 4.5 10 4.5 - 6.5 15 6.5 - 8.5 30 8.5 - 10.5 15 Construct a frequency polygon and ogive for the data. => Graph..

Emily is constructing a fountain that is shaped like a regular pentagon. Find the perimeter of the fountain, if each of its side measures 2 ft. => 10 cm or 11 cm or 8 cm or 9 cm..

A model of an arch as shown is to be constructed for testing in a wind tunnel. Find the total area of the surface of the model shown, which is exposed to wind. [Take a = 8 m, b = 6 m, c = 1 m and d = 2 m.] => 70.74 m 2 or 104.74 m 2 or 117.74 m 2 or 146.74 m 2..

The orbital velocities of the planets in our solar system are shown in the table. Construct a Pareto chart for the data. Planet Velocity (mi/sec) Mercury 29.7 Venus 21.8 Earth 18.5 Mass 15.0 Jupiter 8.1 Saturn 6.0 Uranus 4.2 Neptune 3.4 Pluto 3.0 => Graph 2 or neither ..