Question

Q1. Choose the correct option (4)

1) A triangular prism has _____ edges.

a) 6 b) 9 c) 12

2) The area of rectangle of length 5a and breadth 3b is ____ .

a) 5a + 3b b) 8ab c) 15ab

3) Lateral or curved surface area of a cylinder is ______ .

a) 2?rh b) ?r

2

h c) 2?r( h + r)

4) Which of the following is a 3-D shape?

a) circle b) square c) cylinder

Q 2. Answer the following questions in one word or number (4)

1) How many vertices does a polygon have if it has 10 faces and 15 edges?

2) What is the volume of a rectangular box of length 3p, breadth 4q and height 5r

respectively?

3) What is the expansion of the identity (a + b)2

?

4) What is the area of a rhombus having diagonals 7.5cm and 12cm?

Q 3. Do as directed (8)

1) Find the product: (2x + 7y)( 7x - 3y)

2) Find the product using suitable identity: ( 6xy - 5)( 6xy + 5)

3) Simplify: (2x + 5)2

- (2x - 5)2

4) Evaluate using suitable identity: 992


please answer me ​

Answer 1

Answer:

first Vani test well address