Monday

December 22, 2014

December 22, 2014

Posted by **Barbara** on Tuesday, November 1, 2011 at 1:13am.

- calculus -
**Steve**, Tuesday, November 1, 2011 at 11:22amif the page width = w, the height = 30/w

Allowing for two margins on each dimension,

a(w) = (width + 2*2)(30/w + 2*1)

= (w+4)(30/w+2)

= 30 + 2w + 120/w + 8

= 2w + 120/w + 38

area is min where da/dw = 0

da/dw = 2 - 120/w^2

2w^2 = 120

w^2 = 60

w = 7.75

a(7.75) = 68.98 -- call it 69 in^{2}

**Answer this Question**

**Related Questions**

Math - A page of a certain book is 12 inches high and 8 inches wide. The top and...

Calculus - 4. A printed page is to have a total area of 100 square inches. The ...

Math - A printed page is to have a total area of 100 square inches. The top and ...

Math - A printed page is to have a total area of 100 square inches. The top and ...

Math - A printed page is to have a total area of 100 square inches. The top and ...

calculus - A document is to contain 80cm squared of print. The margins at the ...

math plz help - please can someone help me do this problem. atleast help me find...

Calculus - A poster is to have an area of 160 in2 with 1 inch margins at the ...

Calculus - A poster is to have an area of 160 in2 with 1 inch margins at the ...

Calculus - A poster is to have an area of 170 in2 with 2 inch margins at the ...