plz help me to solve this Q, 1 to 7 plz bro or sis Can Msmaya help me plz
Answers
Step-by-step explanation:
what is the meaning of your question ❓
Answer:
1. Perimeter of rectangular sheet =
= 2 (l+b)
= 2 (12½ + 10⅔)
= 2 (25/2 + 32/3)
= 2 [(75+64)/6]
= 2 × 139/6
= 139/3
= 46⅓ cm
2. 2/7 of ¾ or ⅗ of ⅝
2/7 of ¾ = 2/7 × ¾ =3/14
⅗ of ⅝ = ⅗ × ⅝ = ⅜
LCM of 14 and 8 = 56
3/14 = 3×4/14×4 = 12/56
⅜ = 3×7/ 8×7 = 24/56
12/56< 24/56
Hence,⅗ of ⅝ is greater than 2/7 of ¾
3. Distance covered in 1 L of petrol
= 55.3 km
Distance covered in 10 L of petrol
= 55.3 × 10
= 553 km
4. i) true
ii) false
iii) false
iv) false
5. (1) 2(x+4) = 1
2x + 8 = 1
2x = 1 - 8
2x = -7
x = -7/2
(2) 4 = 5 (p-2)
4 = 5p - 10
5p = 4 + 10
p = 14/5
6. Isn't given.
7. Length = 40 cm
Diagonal = 41 cm
Breadth = x cm
Using Pythagoras theorem,
(41)² = (40)² + x²
x² = (41)² - (40)²
= (41+40) (41-40)
= 81 × 1
x² = 81
x = √81
= 9 cm
So, breadth = 9 cm
Now, Perimeter of the rectangle
= 2(l + b)
= 2(40+ 9)
= 2 × 49
= 98 cm