<h2>Required Answers :-</h2>
9.
Q:-If the perimeter of an isosceles triangle is 83 cm. and its base is 23 cm. Find the measure of its equal sides.
<u>A</u><u>n</u><u>s</u><u>w</u><u>e</u><u>r</u><u>:</u><u>-</u><u> </u> As we know that Perimeter is the sum of all sides.
- Let the both side be x
- 83 = 23 + (x + x)
- 83 - 23 = 2x
- 60 = 2x
- 30 = x
Other two sides are 30 cm.
10.The perimeter of a rhombus is 5.6 cm. Find its side.
<u>A</u><u>n</u><u>s</u><u>w</u><u>e</u><u>r</u><u>:</u><u>-</u><u> </u> As we know that
Side of Rhombus = Perimeter/4
- Side = 5.6/4
- Side = 1.4 cm
- Side is 1.4 cm
11.The perimeter of a rectangle is equal to that of a square with side 17 m. If the length of the
The perimeter of a rectangle is equal to that of a square with side 17 m. If the length of therectangle is 26 m. What is its breadth ?
<u>Answer</u><u>:</u><u>-</u> Perimeter of square = 4 × s
- Perimeter = 4 × 17
- Perimeter = 68 cm
Now,
- Perimeter of rectangle = 2(l + b)
- 68 = 2(26 + b)
- 68/2 = 26 + b
- 34 = 26 + b
- 34 - 26 = b
- 8 = b
- b=8
12.What is the cost of fencing a rectangular field of length 16 m and breadth 11 m at the rate of 12 per m.
<u>Answer</u><u>:</u><u>-</u> Perimeter = 2(l + b)
- Perimeter = 2(16 + 11)
- Perimeter = 2(27)
- Perimeter = 54 cm
Now,
- Total cost = 54 × 12
- Total cost = ₹648.
Answer:
72
Step-by-step explanation:
RQS + KLM = 180 degrees, because RQS = QLK, and QLK + KLM = 180 degrees (because they are on the same line).
Substitute the values for RQS and KLM:
x-36 + x = 180 -->
2x-36=180 -->
2x = 144 -->
x=72
The total number of sweets given to Mohamed in the beginning is equals to 20.
As given in the question,
Let x be the total number sweets given to Mohamed in the beginning.
Number of sweets he ate when feeling sick =
Number of sweets left = x - (x /5)
= (4x / 5)
Number of sweets he ate next day = ×
= x /5
Number of sweets left = (4x/5) - (x/5)
= (3x /5)
Number of sweets he ate on the following day = ×
= (3x / 20)
Number of sweets left at the end = (3x /5) - (3x/20)
= (12x-3x) / 20
= (9x /20)
As per given condition,
(9x / 20) = 9
⇒ x = (9 × 20)/9
⇒ x= 20
Therefore, the total number of sweets given to Mohamed in the beginning is equals to 20.
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Answer:
y=25x is correct option .