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NCC Bank Limited
Computer Science
বাংলা ভাষা ও সাহিত্য
ইসলামিয়াত প্রশ্ন
GK
43th Bcs Preliminary
"Education-Instruction-Inspiration"
Aptitude Test
Verbal Reasoning
Logical Reasoning
NCC Bank Limited
Computer Science
বাংলা ভাষা ও সাহিত্য
ইসলামিয়াত প্রশ্ন
GK
43th Bcs Preliminary
General Mathematics Part
1.
The length of a rectangle is 6 cm more than the side of a square, and width of the rectangle is 6 cm less than the side of the square. If the area square is 86 cm², what is the area of the rectangle?
[Dhaka Bank MTO-2011 : 2011]
1. 36 cm²
1
2. 40 cm²
2
3. 50 cm²
3
4. 64 cm²
4
5. None of these
5
Answer
Answer
: 50 cm²
Explanation
:
Let, Side of a square =a
∴
a²=86cm²
∴ Length of rectangle=a+6
Width of a rectangle=a-6
∴ Area of rectangle=(a+6)x(a-6)
=
a²-36
=86-36=50 cm² (Ans)
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