C-12-Q107mediumsingle_mcq

In Example 14, the area of the path around the garden is —

a $160\text{ m}^2$
b $200\text{ m}^2$
c $216\text{ m}^2$
d $240\text{ m}^2$

ব্যাখ্যা

With a $2$ m wide path around the $30 \times 20$ garden, the outer rectangle is $34 \times 24$ ; the path area is $34\times24 - 30\times20 = 816 - 600 = 216\ \text{m}^2$ .

এই অধ্যায়ের আরও প্রশ্ন

C-12-Q108In Example 14, the total cost of paving the path with bricks is —
C-12-Q109With length and breadth , the condition "twice the breadth is m more than the length" gives —
C-12-Q110The condition "perimeter of the garden is m" gives —
C-12-Q111The length of a rectangle is m less and breadth is m more than original makes the area m² less; length m more
C-12-Q112In the same rectangle, the breadth is —
C-12-Q113The length of a rectangular floor is m more than its breadth and the perimeter is m. The length is —
C-12-Q114In the same floor, the breadth is —
C-12-Q115If decorating the floor with mosaic costs Tk. per square metre, the total cost is —
C-12-Q116A boat goes km/h with the current and km/h against the current. The speed of the boat in still water is —
C-12-Q117In the same problem, the speed of the current is —

Simple Simultaneous Equations in Two Variables — সব প্রশ্ন দেখুন (152টি) →

In Example 14, the area of the path around the garden is —

160\text{ m}^2

200\text{ m}^2

216\text{ m}^2

240\text{ m}^2

ব্যাখ্যা

With a $2$ m wide path around the $30 \times 20$ garden, the outer rectangle is $34 \times 24$ ; the path area is $34\times24 - 30\times20 = 816 - 600 = 216\ \text{m}^2$ .