topic badge
India
Class IX

Area of a triangle - herons formula

Interactive practice questions

What is the area of the triangle with sides of length $5$5 cm, $6$6 cm and $5$5 cm?

a

First find the semi-perimeter $s$s.

b

Hence find the area using Heron's formula.

Easy
2min

Find the area of the triangle with side lengths of $5$5 cm, $5$5 cm and $8$8 cm.

Easy
1min

Find the area of the triangle with side lengths of $6$6 cm, $5$5 cm and $9$9 cm.

Round your answer to two decimal places.

Easy
1min

Find the area of the triangle.

Easy
1min
Sign up to access Practice Questions
Get full access to our content with a Mathspace account

Outcomes

9.M.A.1

Area of a triangle using Heron’s formula (without proof) and its application in finding the area of a quadrilateral.

What is Mathspace

About Mathspace