Answer:
x = 5
Step-by-step explanation:
Given that, exterior angles on the same side of a traversal are supplementary a Hence, sums up to 180°
Given the angles:
7x° + 11x° + 90° = 180°
18x° + 90° = 180°
18x° = 180° - 90°
18x° = 90°
x = 90° ÷ 18
x = 5
Answer:
31.1% increase
Step-by-step explanation:
% increase= 100 X (final-initial)/initial
A=pi(c/2)^4=pi^2/c^216=(5pi)^2/8=25pi^2/8
Answer:
6?
Step-by-step explanation:
You can try with : 30 x 40 x 10. Volume is 12000 and the surface area:
2*30*40 + 2*30*10 + 2*40*10 = 2400 + 600 + 800 = 3800. This is a surface area between 3200 cm² and 4000 cm².