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A picture is 60cm wide and 1.8m long. The ratio of its width to its perimeter in

lowest form is

(A) 1 : 2 (B) 1 : 3 (C) 1 : 4 (D) 1 : 8

Answer:

(D) 1 : 8

From the question it is given that,

Width of a picture = 60 cm

Length of a picture = 1.8 m

We know that, 1 m = 100 cm

So, 1.8 m = 180 cm

Perimeter of rectangle = 2 (length + breadth)

= 2 (180 + 60)

= 2 (240)

= 480

Therefore, The ratio of its width to its perimeter in lowest form = 60/480

Divide both numerator and denominator by 20.

= 3/24

Again, divide both numerator and denominator by 3.

= 1/8

= 1 : 8

"hello students welcome to lido q a video
session
i am seph your math tutor and question
for today is an isosceles triangle has a
parameter
30 centimeter and each of the equal side
is 12 centimeter
find the area of the triangle so in the
question it is given
that length of equal sides
is 12 centimeter
each and
perimeter
of given
isosceles triangle
is 30 centimeter
so 30
will be equal to 12 plus
12 plus let the third side be x
so the length of the third side will be
x is equal to
30 minus 24
so it is 6 centimeter
thus the semi perimeter of the isosceles
triangle will be equal to
12 plus 12 plus 6
upon 2
that is 30 upon 2
and that comes out to be 15 centimeter
once you found the value of s you can
easily find the area
so area of
given isosceles
triangle will be equal to
root of
s s minus a
s minus b s minus c
where abc are the three sides of
isosceles triangle
so root of
15 15 minus 12
15 minus 12 and 15 minus 6
so we can write
area a will be equal to root of
15 into 3 into 3 into 9
and that is 9 under root
15 centimeter square
so area of the triangle
is 9 root 15
centimeter square if you have any query
you can drop it in our comment section
and subscribe to lido for more such q a
thank you for watching
"

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