Question

Q. 1 - Find the ratio of the 80 cm to 4 m.
Q.2 - Find the value 12.5% of 400.
Q. 3 - Find the perimeter of the square with side 7.3 cm.
Q.4 - Find the area of a square park whose perimeter is 4.8 m.
Q.5 - Divide Rs. 1050 in the ratio 7:8.
Q. 6 - Calculate loss, if CP = Rs. 128; SP=Rs.80.
Q.7 - Find the mean proportional between 16 and 9.
Q. 8-Determine whether 10, 60, 150, 25 is in proportion or not.
Q.9-A man saves Rs. 24,000 in 8 months.
a) How much will he save in 12 months ?
b) In how many months will he save Rs. 33,000 ?​

Answer 1

(1) 80 cm to 4m => 80 cm to 400 cm

=> 80/400 = 1/5 => 1:5 ✔✔

________________________

(2) 400×12.5/100 = 50✔

_______________________

(3) 4 × side => 4 × 7.3 = 29.2 cm

_______________________

(4) Perimeter = 4.8 m

=> 4 × side = 4.8 => side = 1.2 m

Now, Area = side^2 = (1.2)^2 = 1.44 m^2

________________________

Fóllòw Më ❤

Answer 2

Answer:

1. 80/4 = 20:1

2. 12.5/100*400 = 50

3. Area = 4× side : 4× 7.3 = 29.2

4. Perimeter= 4S so 4s = 4.4 ....s = 1.1 now area= 1.1*1.1 = 1.21