Question

1 Find the area of a square whose perimeter is 100

(2) The product of two numbers is 4by9If one of them is7by17 find the other.

In a class of 50 students, 3by 5are girls. How many boys are there in the class?
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Answer 1

Answer:

it area will be 25×25=625unit seq

Step-by-step explanation:

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Answer 2

Answer:

1. Perimeter of square = 4a = 100

So side, a = 100 / 4 = 25

Area of square = a * a = 25 * 25 = 625

2. 7 / 17 * x = 4 / 9

So 7 x = 4 / 9 * 17 = 7.56

X= 7.56 / 7 = 1.08

3. Number of girls = 50 * 3 / 5 = 30

Number of boys = 50 - 30 = 20