There is a right angled triangle, you know the length of the hypotenuse (6) and one other side (3), can you calculate the third side of the triangle?

So it is easiest if we first draw out the triangle and label it.We use an equation called Pythagoras' Theorem. This equation is A^2 + B^2 = C^2So we know the length of side A (3) and side C (6), lets put this into the formula:3^2 + B^2 = 6^29 + B^2 = 36B^2 = 27B = √27B = 5.20 (2DP)

OT
Answered by Oliver T. Maths tutor

2766 Views

See similar Maths GCSE tutors

Related Maths GCSE answers

All answers ▸

How would you solve the simultaneous equations 2x + y = 7 and 3x - y = 8


Here is a right-angled triangle (base = 8cm and height = 9cm) and a rectangle (length = 16cm). The area of the rectangle is 6 times the area of the triangle. Work out the width of the rectangle.


C is a circle with equation x^2 + y^2 = 16. The point P = (3,√7) is on C. Find the equation of the tangent to C at the point P.


How do you change the subject of the formula?


We're here to help

contact us iconContact ustelephone icon+44 (0) 203 773 6020
Facebook logoInstagram logoLinkedIn logo

MyTutor is part of the IXL family of brands:

© 2026 by IXL Learning