canyon37409
canyon37409 canyon37409
  • 01-09-2017
  • Mathematics
contestada

What is the total surface area of this composite solid ?

What is the total surface area of this composite solid class=

Respuesta :

eco92 eco92
  • 01-09-2017
Each of the small 12 identical blocks has dimensions 4 by 5 by 7 inches.

Together they form a larger block of:

width w=5 in
length l = 7 in+7 in+7 in = 21 in 
height h = 4 in + 
4 in + 4 in + 4 in=16 in

The total area of the block is:

(front face+back face)+("floor" face + "ceiling" face) + 2 side faces
=
16 * 21 + 16*21 + 5*21+ 5*21 + 5*16+5*16  (square inches)
=
336+336+105+105+80+80  (square inches)

= 672+210+160 (square inches)

=1,042 square inches


Answer: 1,042 square inches

Answer Link

Otras preguntas

You ask 150 people about there pets.9/25 of the people have dogs.1/6 of the people who own a dog own a cat too. Q1: how meany people own a cat and dog? Q2:How m
Your local gas stations are having a price war. During the past 7 days they have lowered the price of regular gas by $0.2 each day. Define a variable. Then writ
What is the result of isolating x^2 in the equation below?
427 thousand as scientific notation
how to solve this[tex]540in = \: yd[/tex]
!!!!!!!!!!!!!!!!!!!!!!PLEASEHELPP!!!!!!!!
Use Distributive Property to simplify; -3(4c-5) -(n+7)
what areas of north america did the dutch colonize
coin had a value of $257.00 in 1995. Its value has been increasing at 9% per year. What is the total value after 5 years? When will the coin be worth $600.? 2.
Humus is rich soil. How is humus both an effect and a cause?