A right-angled triangle has base 10cm and height 4cm. What is the area of the triangle?

The first thing we should note here is that we are looking for the area, so we need to recall the formula for the area of a right-angled triangle:

Area = (base x height) / 2

Next we can input our values given in the question, into the formula:

Area = (10 x 4) / 2

       = 20

As we are looking for an area, we must have a unit of measurement in our answer, and as the base and height were measured in cm, we can say that the area of the triangle is 20cm2.

So the answer is 20cm2.

Kirsty S. A Level Maths tutor, GCSE Maths tutor, A Level Further Math...

7 months ago

Answered by Kirsty, a GCSE Maths tutor with MyTutor

Still stuck? Get one-to-one help from a personally interviewed subject specialist


PremiumRyan G. GCSE Maths tutor, GCSE Physics tutor, GCSE Computing tutor, A...
£22 /hr

Ryan G.

Degree: Electrical Engineering with Renewable Energy (Masters) - Edinburgh University

Subjects offered:Maths, Physics+ 2 more

-Personal Statements-

“ I will offer a wide range of ways to learn so you can find a way that best suits you!”

Ethan R. A Level Maths tutor, GCSE Maths tutor
£18 /hr

Ethan R.

Degree: Maths and Physics (Masters) - Durham University

Subjects offered:Maths, Physics+ 1 more

Further Mathematics

“Hi, I'm Ethan. I like to take a friendly approach to tutoring and want to learn what works best for you. Maths can be easy, as long as you know how!”

£22 /hr

Lauren G.

Degree: Technology Enhanced Learning (Masters) - Durham University

Subjects offered:Maths, Physics+ 2 more


“Hello! I'm currently a Master's student studying Technology Enhanced Learning at Durham University. I completed my undergrad last year in Natural Sciences with Maths and Computer Science, also from Durham.  I am very passionate about ...”

About the author

Kirsty S. A Level Maths tutor, GCSE Maths tutor, A Level Further Math...

Kirsty S.

Currently unavailable: for new students

Degree: Mathematics (Bachelors) - Warwick University

Subjects offered:Maths, Spanish+ 1 more

Further Mathematics

“Hello, I'm Kirsty and I am here to help you with Maths. Maths will soon become the exam that you will look forward to, so you can show off how much you know! Before I begin any tuition I find out exactly what you would like to get ou...”

You may also like...

Other GCSE Maths questions

Expand and simplify (x + 5)(x – 1)

Solve the simultaneous equations 2x+2y=14 and 3x-y=1

A gardener uses this formula to work out how much he charges to make a lawn. C = (7(14+A))/3. C is the charge in £, A is the area in m^2. He makes a rectangular lawn measuring 12.5 m by 17.6 m. How much does he charge? [3 marks]

Express 0.545454... as a fraction in its simplest form.

View GCSE Maths tutors

We use cookies to improve your site experience. By continuing to use this website, we'll assume that you're OK with this. Dismiss