Question

16. If p-2. find the value of: -5p+ 6p+4
IV. Answer the following questions:
4X3-12
17. The perimeter of a rectangle is 160cm. If the length of the rectangle is
50cm. Find its breadth. Also find its area
18. The circumference of a circle is 88cm. Find its area.
19. Subtract 3x - 5x- 9x + 6 from 2x + 9x? - 7x-8.
20. Simplify the given expression and find its value when x=2.
5( 3x - 1) + 2x +11
4 X 4 = 16
V. Answer the following questions:
21. A rectangular ground is 90m long and 32m broad. In the middle of th
ground there is a circular tank of radius 14m. Find the cost of garden
of Rs 50 per square metre​

Answer 1

Answer:

17-

Step-by-step explanation:

Perimeter of rectangle = 2× (Length + Breadth)

160 = 2 × (50 + b)

Breadth = 160 ÷ 2 = 50 + b

80 = 50 + b

b = 80-50

b = 30 cm

Area of rectangle = length × breadth

= 50 × 30

= 1500 cm^2