wiz-icon
MyQuestionIcon
MyQuestionIcon
1
You visited us 1 times! Enjoying our articles? Unlock Full Access!
Question

Find the area of a triangle two sides of which are 18 cm and 10 cm and the perimeter is 42 cm?

Open in App
Solution

Let the sides of the triangle be a = 18 cm, b = 10 cm and c = ?
∴ Perimeter (2s) = 42 cm
s=422=21 cm
c=42(18+10) cm
∴ Area of the given triangle
=21(2118)(2110(2114)) cm2
=21×3×11×7 cm2
2111 cm2
Thus, the required area of the triangle =2111 cm2

flag
Suggest Corrections
thumbs-up
1
Join BYJU'S Learning Program
similar_icon
Related Videos
thumbnail
lock
Area of Special Triangles
MATHEMATICS
Watch in App
Join BYJU'S Learning Program
CrossIcon