15. Rates of Change, Area, and Volume
United States of America
Grades 9-12
15.07 Heron's 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
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