SSL MATHS (Talisa)
A rectangle am long is equal in area to a
square which has a perimeter of 2 tom. Find the
wrdth of the rectangle.
An arc
subtends an angle of 105 at the cent
circle of radus 6cm. Find the length
arc If To
isi 22
7
alculate the perimeter of a
sector of a
radurs tem the angle of the sector be
i if to is 22/7
T.
e
terms of Ut, what is the length of an
2. subtends an angle of 30° at the cont
3 cm 20 crostad

b

step-by-step explanation:

the word superfluous means unnecessary

geometry: triangles

solvers

lessons

answers archive

call the larger triangle abc

then the smaller triangle cde is similar to abc (all angles are equal, aaa).  

ab is the side that is 36, and we wish to find de, the side corresponding to ab

area_cde = area_abc - area_cde --> area_abc / area_cde = 2

let x=length of de

ratio of areas = (ratio of sides)^2

+2+=+%2836%2fx%29%5e2+

+2+=+1296%2fx%5e2+

++x%5e2+=+1296%2f2+=+648+

25.45584

17.08

correct me if i am wrong.