A rectangular board is țo be cut along the diagonal and the pieces rearranged to form an equilateral triangle, and the sides of the triangle must. be 50 centimetres. What should be the length and breadth of the rectangle?

What is the circum radius of an equilateral triangle of sides 8 centimetres?

A square and equiIateral triangle of sides twice as long we cut and the pieces are rearranged to form a trapezium, as shown below. If a side of the square is 2 centimetres, what are the perimeter and area of the trapezium? .

What is the area of the circumcircle of an equilateral triangle of sides 6 centimetres.

The lateral faces of a square pyramid are equilateral triangles and the. length of base edge is 30 centimetres. What is its surface area?

A rectangle is to be made with perimeter 100 centimetres and area 525 square centimetres. What should be the lengths of its sides?

A 50 centimetre long rod is to be cut into two pieces, one of which is to be bent to form a square and other is to be bent to form an equilateral triangle. The length of a side of the equilateral is twice the length of the side of a square. Find the length of the side of a square and equilateral triangle.

Of four equal equilateral triangles, two are cut vertically into halves and two whole are put together to make a rectangle: If a side of the triangle ls 1 metre, what is the area and the perimeter of the rectangle?

The area of a right angled triangle is 96 square centimetres. One of the perpendicular sides is. 16 centịmetre long. What is the length of the other?

What is the length of one side of a equilateral triangle with height 3 cm. Find the perimeter.

An isosceles triangle has to be made like this .The height should be 2 metres less than the base. The area of the triangles should be 12 square metres. What should be the length of its sides?