dylaneverton1p7v5t6 dylaneverton1p7v5t6

03-05-2018
Mathematics

contestada

If 400 bricks measuring 81" by 31" are required to build a wall 42 ft. high, how long is the wall? feet.

Respuesta :

popalabdulqayou popalabdulqayou

14-05-2018

let b bricks:

b= 400, let H height and l length

Area = 81*31 or 6.75*2.58 = 17.44 ft²

b(17.44ft²)=Hl

400(17.44 ft²) =42 l

l= 6975/42 = 166.07

so the length of the wall is 166 ft approximately as a whole number

Answer Link

Otras preguntas

Jane likes to sunbathe She has read about risks from sunbathing and how to reduce them. She thinks she is not at risk from sunbathing because she has dark skin.

who do scholars believe first wrote Beowulf

How many $0.21 pencils can be purchased for $7.00? Show your work.

a trapezoid has an area of 20cm squared and a height of 5 cm. what is the sum of its top and bottom sides

How many $0.21 pencils can be purchased for $7.00? Show your work.

Log4(6x-8)=3 Help please

There are 6 pencils in a box. 3 of the pencils are red, 2 are blue and 1 is green. A pencil is taken out of the box without looking. What is the probability tha

make a short dialogue about the introduction!

Write a newspaper headline about the Boston tea party from the points of view of a loyalist and a patriot. Explain your headlines.

The area of a square field is 200 square feet. What is the approximate length of each side of the field? Round your answer to the nearest foot.