Question

Q7. Simplify: (a? + b2 + 2ab) - (a? + b2 – 2ab) (4)
Q8. The measures of two angles of a triangle are 72º and 58º. Fi
of the third angle. (3)
Q9. Find the perimeter of a rectangle in which: (4)
i. Length= 16.8cm and breadth= 6.2cm
ii. Length= 15.4cm and breadth= 11.6cm​

Answer 1

Answer:

8- sum of all angles=180

180-(72+58)

180-130=50