Area and Perimeter of a Right Triangle

If the sides of a triangle are 3, 4, and 5, what is the semi-perimeter?

• 3

• 6

• 9

• 12

Perimeter is the total distance around a 2-dimensional shape

• True

• False

Find the area of the triangle

The amount of space inside a 2-dimensional shape is called the

• Perimeter

• Volume

• Area

• Length

The sides of a triangle are in the ratio of 3 : 4 : 5. If its perimeter is 36 cm, then what is its area?

The edges of a triangular board are 6 cm, 8 cm and 10 cm. The cost of painting it at the rate of 9 paise per cm² is

• Rs 2.14

• Rs 2.16

• Rs 2.48

• Rs 2.80

The base of a right triangle is 48 cm and its hypotenuse is 50 cm. The area of the triangle is

• 168cm²

• 324cm²

• 336cm²

• 136cm²

if the area of an isosceles right triangle is 8cm²

^{find its perimeter}

• 8

• 2+4√2cm²

• 4+4√2cm²

• 8+4√2cm²

The area of a triangle is 150 sq. cm. and its sides are in the ratio 3 : 4 : 5. What is its perimeter?

• 10 cm

• 40 cm

• 35 cm

• 60 cm

The area of ΔABC in which AB = AC = 4 cm and ∠A = 90° is ________

• 8 cm²

• 16 cm²

• 10 cm²

• 32 cm