In the diagram,pars is a rectangular piece of paper with an area of 28 (cm)kuasa 2.STR is a semicircle and it's cut from the piece of paper.the perimeter of the remaining piece of the paper is 26 cm.find the integer values of x and y.the diameter of semicircle is 7x cm...camne buat soalan ni..tlg jwb sape2 jeeee.

1
what is y? without a proper explanation, I can't imagine. 

Jawapan

2016-01-19T15:40:14+08:00
7x × y = 28
y = 4/x

s = 180/360 × 2(22/7)(7x)
= 11x

Perimeter of the remaining piece
7x + 2y + 11x = 26
18x + 2y = 26
substitute y = 4/x
18x + 2(4/x) = 26
18x^2 - 26x + 8 = 0
x = 1 , 4/9

since soalan minta integer, kita ambik 1 .
x = 1

y = 4/x
y = 4


Nak check jawapan betul atau salah,
7x × y = 28
7(1) × (4) = 28
1 5 1
wow.amazing.thats correct.thank u.
mcm mana lah awk boleh jwb sepantas tu :)
welcome. if anything, message pun boleh or anything. its actly kind of hobby to solve math problem. gaha
hahaha.if like that,can u help me to solve this type of question.mathematic..
suree.