Answer:
B. 5.22×10⁸
Step-by-step explanation:
Answer:
Therefore,
The length of the sides of the squares is

Step-by-step explanation:
Let "x" be the length of Cut Square,
As the tin size(Dimension) is
20 cm × 50 cm
So the size(Dimension) of box will be
(20 - 2x) × (50 - 2x)
Length = 50 - 2x
Width = 20 - 2x
Area of base of box = 216 cm²
To Find:
x = ?
Solution:
Area of Rectangular field is given by

Substituting the values we get

Applying Distributive property we get


Dividing throughout by 4 we get

On Factorizing we get

As x cannot be 28 because tin size is 20 cm × 50 cm i.e longer than 20
Therefore,

Therefore,
The length of the sides of the squares is

Answer:
a) 1504
b)
Step-by-step explanation:
A
a. no of people that are male = 42
b. no of people that study biology = 34
c. no of people that do both = 1428(42 × 34)
d. no of people that are Male or study biology or both = 42 + 34 + 1428= 1504
B.
a.no of people that are male or female = 90
prob(male) = 14 ÷ 90
= 0.16
b. prob(bio) = 34 ÷ 34
= 1
c.prob(both) = 0.16
d. prob(all) = 0.16 + 1 + 0.16
= 1.32