Afurniture builder who has been commissioned to custom build some bookcases. he goes and measures the space but only had a meter stick with him. finds that the length is 2 meters, the height is 4 meters and the depth is 50 centimeters.

you are to build the shell of the bookcases. you can only buy lumber in 1 inch by 12 inches by 8 feet though. if each plank costs $18.00 how much will the materials cost the customer?
a) $144.00
b) $198.00
c) $702.00
d) $720.00

area of part 1:

a1=base*height/2=(8+2)*(8-2-2-1)/2=10*3/2=15 ft^2

area of part 2:

a2=length*width=(8+2)*1=10 ft2

area of part 3:

a3=length*width=8*2=16 ft2

total shaded area : a1+a2+a3=41 ft2

total area of the reactangle : a=16*8=128 ft2

total area of the nonshaded region : 128-41=87 ft2

hi there!

first we need to find out how much they are adding to each number to make the next number.

ex: 4 + 4 = 8, 8 + 8 = 16, and so on.

so continuing with 32,

32 + 32 = 64

64 + 64 = 128

128 + 128 = 256

256 + 256 = 512

4, 8, 16, 32, 64, 128, 256, 512

the 8th term of the sequence will be 512

hope this ! ~

b

step-by-step explanation: