Volume and Surface Area Questions

• If curved surface area of a cylinder is 1386 sq cm and height is 21 cm, what will be its radius? (Take π = 22/7)
• At least one diagonal bisects the other in a _____.
• ΔABC is right angled at B. BD is its altitude. AD = 4 cm and DC = 12 cm. What is the value of AB (in cm)?
• What is the diameter (in cm) of a sphere of surface area 154 sq cm?
• What is the area (in sq cm) of a regular hexagon of side 14 cm?
• What is the slope of the line parallel to the line passing through the points (5, -1) and (4, -4)?
• ΔXYZ is similar to ΔPQR. If ratio of Perimeter of ΔXYZ and Perimeter of ΔPQR is 16:9 and PQ = 3.6 cm, then what is the length(in cm) of XY?
• If the measure of the interior angle of a regular polygon is 90 deg greater than the measure of its exterior angle, then how many sides does it have ?
• Find the volume (in cub.cm) of a hemisphere of diameter 21 cm.
• O is the orthocentre of ∆ABC , and if ∠BOC = 110° then ∠BAC will be
• BE and CF are two altitudes of a triangle ABC. If AB = 6 cm , AC = 5 cm and CF = 4 cm , then the length of BE is
• In a ∆ABC , BC is extended upto D, ∡ ACD =120°, ∡ B = 1/2 A. Then ∡ A is
• O is the centre of a circle and AB is the tangent to it touching at B . If OB = 3 cm. and OA = 5 cm , then the measure of AB in cm
• In ΔABC, the medians AD and BE meet at G. The ratio of the areas of ΔBDG and the quadrilateral GDCE is
• The lengths of diagonals of a rhombus are 24cm and 10cm the perimeter of the rhombus (in cm ) is :
• O is an centre of a circle. P is an external point of it at distance of 13cm from O. The radius of the circle is 5cm. Then the length of a tangent to the circle from P upto the point of contact is
• G is the centroid of the equilateral triangle ABC, if AB = 9cm then AG is equal to
• Δ ABC is right angled at B. If m∠A = 30° , what is the length of AB (in cm), if AC = 10 cm?
• The chord AB of a circle of centre O subtends an angle θ with the tangent at A to the circle. Then measure of∠ABO is
• Two adjacent sides of a parallelogram are 21 cms and 20 cms. The diagonal joining the end points of these two sides is 29 cms. The area of the parallelogram (in sq.cms) is