What is the diameter of a circle of area 77cm² (take $\pi =\tfrac{22}{7}$ ) 

In the diagram, the shaded part is a carpet laid in a room with dimensions 3.5m by 2.2m leaving a margin of 0.5m round it. Find the area of the margin

The area of a rhombus is 110cm². If the diagonal are 20cm and (2x +1)cm long. Find the value of x

The dimensions of a rectangular tanks are 2m by 7m by 11m. If its volume is equal to that of a cylindrical tanks of height 4cm. Calculate the base radius of the cylindrical tank [Take $\pi =\tfrac{22}{7}$]

A sector of a circle with radius 6cm subtends an angle of 60^o at the centre. Calculate its perimeter in terms of π

The volume of a cone of height 3cm is $38\tfrac{1}{2}$cm². Find the radius of its base [Take $\pi =\tfrac{22}{7}$]

A rectangular carpet 2.6m long and 2.4 wide covers 5% of rectangular floor. Calculate the area of the floor.

The wheel of a tractor has diameter 1.4m, what distance does it cover in 100complete revolution? [Take $\pi =\tfrac{22}{7}$]

The diagram shows an arc MN of a circle centre O, with radius 10cm, If $\angle MON={{72}^{\circ }}$ Calculate the length of the arc, correct to three significant figures. [Take $\pi =\tfrac{22}{7}$]

In the diagram, the two circles have a common a centre O, if the area of the larger circle is 100π and that of the smaller circle is 49 π. Find x