Areas of figures
Types of exercises: a length from the area, the shortest height of a right triangle, area of a polygon on a grid.
Exercises are drawn at random from a large bank - every click gives a different set.
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Solved: 0 of 10
Problem
A right triangle has sides of 7 cm, 25 cm and 24 cm. How long is the shortest height of this triangle?
Read the lengths you need from the drawing and work out the area
Each grid square is 1 cm wide. What is the area of the rhombus shown?
Problem
A triangle has an area of 27 dm², and one of its sides is 6 dm long. How long is the height drawn to that side?
Problem
A right triangle has sides of 15 dm, 25 dm and 20 dm. How long is the shortest height of this triangle?
Read the lengths you need from the drawing and work out the area
Each grid square is 1 cm wide. What is the area of the trapezium shown?
Problem
A rectangle has an area of 14 cm², and one of its sides is 7 cm long. How long is the other side?
Problem
A right triangle has sides of 8 mm, 15 mm and 17 mm. How long is the shortest height of this triangle?
Read the lengths you need from the drawing and work out the area
Each grid square is 1 cm wide. What is the area of the triangle shown?
Problem
A rhombus has an area of 25 cm², and one of its diagonals is 5 cm long. How long is the other diagonal?
Problem
A right triangle has sides of 24 m, 18 m and 30 m. How long is the shortest height of this triangle?
This address is one particular set - everyone who opens it gets exactly the same exercises. Copy the link from the address bar and send it to the class. You can generate a new set at the top of the page.
PhiBoard is a free online whiteboard for maths
These exercises are part of it. On the board itself you can plot a function, write a formula in LaTeX, or solve a problem together with a teacher or a friend - live, in the browser. Our app is completely free.