Perimeter and Area

What is the formula to find the perimeter of a rectangle?

• 2 * (length + width)

• length + width

• length * width

• 2 * length * width

Calculate the perimeter of a square with side length 5 units.

• 20 units

• 10 units

• 15 units

• 25 units

What is the formula to find the area of a triangle?

• length x width

• base x height

• radius x 2

• (base x height) / 2

Find the area of a rectangle with length 8 units and width 4 units.

• 12 square units

• 32 square units

• 28 square units

• 16 square units

What is the formula to find the perimeter of a circle?

• π * r^2

• 2 * r

• 3 * π * r

• 2 * π * r

Calculate the perimeter of a circle with radius 6 units (use π = 3.14).

• 37.68 units

• 48.26 units

• 12.56 units

• 25.12 units

What is the formula to find the area of a circle?

• πr^2

• 3r^2

• r/2

• 2πr

Find the area of a circle with radius 10 units (use π = 3.14).

• 30

• 314

• 100

• 200

Area of a circle is 154 cm², find its circumference.

• 14 cm

• 24 cm

• 34 cm

• 44 cm

The length and breadth of a rectangular field are equal to 600 m and 400 m respectively. Find the cost of the grass to be planted in it at the rate of ₹ 2.50 per m².

• ₹ 2,40,000

• ₹ 6,00,000

• ₹ 60,000

• ₹ 24,000