Question

EXERCISE 15.2
1. Find the side of a square whose aren is 4225 m.
2. Find the area of a rectangle whose breadth is half the length and breadth is 19 cm,
3. A square plot of side 15 m has a path along its inside boundaries of width 2.8 m. Find the area of
the path,
4. A square table of side 90 om has a frame of width 3 cm around in Find the outer wrea of the table
and the uren of the frame.
5. A rectangular playground 75 m 45 m has a jogging track of width 3.7 m along its inside edges,
Find the area of the jogging track,
6. A rectangular mat of 5 m x 3.5 m had a border of' width 18 m all around it. If the cost of the mat
is 7 272/m, find the cost for bordering the mat.​

Answer 1

Answer:

$\huge\bf\blue{Question}$

1. Find the side of a square whose area is 4225 m.

$\huge\bf\blue{Answer}$

• area of the square is 4225 m²

• Side of the square = ?

Area of square = side²

➡️ 4225 = side²

➡️ side = √4225

➡️ side = 65 m

$\huge\bf\blue{Question}$

2. Find the area of a rectangle whose breadth is half the length and breadth is 19 cm,

$\huge\bf\blue{Answer}$

• Breadth is half the length.

• Breadth is 19 cm.

• let length be x .

➡️ ½ × x = 19

➡️ x = 19×2

➡️ x = 38 cm .

Area of rectangle = length × breadth

➡️ 19 × 38

➡️ 722 cm²