Equation for length:
l = 3w
l × w = 12
Substitute 3w into L.
(3w) × w = 12
4w = 12
w = 3
Substitute 3 into w to find the length.
l = 3w
l = 3×3
l = 9
The width is 3 and the length is 9.
we know that
<u>Alternate interior angles</u> are two interior angles which lie on different parallel lines and on opposite sides of a transversal. Alternate interior angles are congruent.
so
m∠3=m∠6 -------> by alternate interior angles
therefore
<u>the answer is the option</u>
Alternate interior angles
sin 28 = opposite / hypotenuse
sin 28 = 20/z
multiply by z
z sin 28 = 20
divide by sin 28
z = 20 / sin 28
z = 42.6
Choice B
Area of rectangle=base*height
A=(c+4)*3
A= 3c+12
8) 400 ÷ 36 = 11.111111..... So 12 shelves