Answer:
[?] = 108
Step-by-step explanation:
is 3/4 of a whole revolution: 
so the area of the sector is 3/4 of the area of the entire circle.
Area of a circle: 
Area of the sector: 
I think the length is 17.75cm and the width is 12.75 cm
I'm not entirely sure whether it's the smallest possible length but it works on the calculator
17.75*2+12.75*2=61
2(i).
(3y-20)+(4x-5)+(x+y-10)+(2x+5)=360 (Angles sum of it trapezium)
3y-20+4x-5+x+y-10+2x+5=360
7x+4y=390
(Shown)
2(ii).
(3y-20)+(2x+5)=180 (Interior Angles, Parallel Lines)
2x+3y=195
(Shown)
Hope it helps : )
Find the volume of the first box which is l*w*h and second box which is also l*w*h and add them. (6*4*5) + (10*10*2)
