Question 1 :
The sides of a triangular field are 41 m, 40 m and 9 m. Find the number of rose beds that can be prepared in the field, if each rose bed, on an average needs 900 $cm^2$ space.

Question 2 :
The perimeter of a triangular field is 420 m and its sides are in the ratio 6 : 7 : 8. Find the area of the triangular field.

Question 3 :
Find the area of a triangle, two sides of which are 8 cm and 11 cm and the perimeter is 32 cm.

Question 4 :
The base of a right triangle is 8 cm and hypotenuse is 10 cm. Find its area.

Question 5 :
<img style='object-fit:contain' src='https://teachmint.storage.googleapis.com/question_assets/cbse_ncert/61b1d1bef59b460d7261f4ba.JPG' /> There is a slide in a park. One of its side walls has been painted in some colour with a message “KEEP THE PARK GREEN AND CLEAN”. If the sides of the wall are 15 m, 11 m and 6 m, find the area painted in colour.