Question

Q3.Find the circumference of the circle with radius 3.5cm
(2)
Q4. Find the area of triangle with base 6cm and height 4.5cm
(2)
Q5.A bicycle wheel has a diameter (including the tyre ) of 70cm.How many times would the wheel rotate to cover a distance of 4.4 km?
(2)
Q6A rectangular plot of land is 40 mlong. The cost of levelling the plot at the rate 18 per m2 is 08320. Find (i)the breadth of the plot.(ii)
(3)
the cost of fencing the plot at the rate of 2 27.5 per metre
07.1f diagonals of a rhombus measures 10 cm and 24cm, find its perimeter
(3)
(3)
08. Find the value of x and y
(3)
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Answer 1

Answer:

3.GIVEN RADIUS=3.5 circumference=2πr

                                            =2*22/7*3.5

                                              =22cm2

5.Diameter of wheel=70cm

radius of wheel=35cm.

distance covered by wheel in 1 revolution=2*22/7*35=220cm

total distance covered=4.4km=4.4*1000 m=4400*100 cm=440000cm

total number of revolution=440000/220=2000