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A square, with sides of length x cm, is inside a circle. Each vertex of the square is on the circumference of the circle. The area of the circle is 49 cm^2. Work out the value of x. Give your answer correct to 3 significant figures.

The question tells us that the area of the circle is 49cm 2 , therefore we are able to form the equation πr 2 =49 (where r = radius of the circle). We can now work out the radius of the circle by rearranging...
SJ
Answered by Sian J. • Maths tutor
23677 Views

Which of these shapes has the most sides? Hexagon, Octagon, Rhombus, Trapezium

Hexagon = 6 sides,Octagon = 8 sides,Rhombus = 4 sides,Trapezium = 4 sides. Therefore, the octagon has the most sides.
II
Answered by Ioan Iulian V. • Maths tutor
27194 Views

Expand the expression (3x+2)(3-2x)

9x - 6x 2 + 6 - 4x-6x 2 + 5x + 6
AH
Answered by Angus H. • Maths tutor
3949 Views

1/4+0.5

1/4+2/4=3/4
ML
Answered by Max L. • Maths tutor
6050 Views

Prove Pythagoras' Theorem

Never in a GCSE syllabus, but still a question I had as a student and one I hear today- something, I feel, is worth going over (Similar in a sense to proving that completing the square works). We use the &qu...
SC
Answered by Sam C. • Maths tutor
3461 Views