Question

I want to know this

Answer 1

Explanation:

Given ,

Perimeter of a sector of a circle

= 3 ( radius ) + lenght (l) of an arc of sector

30= 2( 6.4)+l

= l = 30 - 12.8 = 17.2 cm

Now , area of sector

= 1/2 lr

= 1/2× 17.2× 6.4

= 55.04 cm ^ .

Answer 2

Photosynthesis is a process used by plants and other organisms to convert light energy into chemical energy that, through cellular respiration, can later be released to fuel the organism's metabolic activities.