The perimeter of a right-angled triangle is 72 cm. The lengths of its sides are in the ratio 3 : 4 : 5. Work out the area of the triangle.

5+4+3=12. 72/12=6. 3(6)=18. 4(6)=24. 5(6)=30. area of right-angled triangle = 1/2 x b x h. 1/2 x 24 x 18= 1/2 x 24 x 9. 24x9 = 216.

RS
Answered by Rohan S. Maths tutor

2556 Views

See similar Maths GCSE tutors

Related Maths GCSE answers

All answers ▸

How do you add or take away fractions? E.g: what is 1/3 + 3/4


There are 10 boys and 20 girls in a class. The class has a test. The mean mark for all the class is 60. The mean mark for the girls is 54. Work out the mean mark for the boys.


find the second degree equation that passes through the points: (0,1) (2,2) (1,0)


Make a the subject of a + 3 = (2a + 7) / r


We're here to help

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

© MyTutorWeb Ltd 2013–2025

Terms & Conditions|Privacy Policy
Cookie Preferences