Assuming 15b means the lengths of each side of the square base and 12l means the length of the triangle from the top to the bottom (note that I'm not assuming 12l is the height of the pyramid) the SA (surface area) will be:
15^2 + 15x12x4/2 = 225 + 360 = 585 units squared (whatever your units are)
Given: P = 150 and L = (5W + 3) Solve the 'L' equation for 'W': (L-3) = 5W ===> W = (L-3)/5 Perimeter = 2L + 2W = 2L + 2[ (L-3)/5 ] = 2L + (2L-6)/5 5 x perimeter = 10L + (2L-6) = 12L - 6 Perimeter = 150 = (12L-6)/5 ===> 750 = (12L - 6) ===> 756 = 12L ===> L = 756/12 = 63=============================== Check: L = 63, W = 12, Perimeter = 2(L+W) = 2(63+12) = 2(75) = 150. Yay !
The figure could be a rectangle with length 4.73 and width 1.27(2dp). Area (A) of a rectangle = Length (L) x Width (W) = 6 : Then W = 6/L Perimeter = 2 (L + W) = 12 : substituting for W then :- 2(L + 6/L) = 12 : 2L + 12/L = 12 : 2L2 - 12L + 12 = 0 Solving for a quadratic equation gives L = (12 ± √48) ÷ 4 = 3 ± √3 = 3 ± 1.73 (2dp)
Multiply the width by length, e.g.10w x 12l 120sqft
Yes
12.000
Are you even trying, I could've done this when I was 6... 6x2 is 12L of water, 12L is 12000mL...
On an average 12L to 36L PA
12L
it's either 12L or 3,500 mL
L is side length so perimeter is 4L. If L is tripled the perimeter becomes 4 x 3L = 12L, so perimeter is also tripled.
24
0.335L*12L= 4.02L = 4020millilitres
It's not usually better than about 12l/100km.
12L x 1000= 12000 mL