Question

pls solve the following problem ( only give me the answer)
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1. At what rate will ₹ 7200 become ₹10,224 in 4 years?

2.The ratio of circumference to the area of a circle of radius r units is:

3.From a square card board, a circle of biggest area was cut out. If the area of the circle is 154 cm^2, calculate the original area of the cardboard

4.The base of a parallelogram is thrice its height. If the area is 192 cm^2, find the base and height.

5.A man borrowed ₹ 8000 from a bank at 8% per annum. Find the amount he has to pay after 4 years 6 months to the bank.

6. I have added the picture above.

7.The base and height of a triangle are in the ratio 8:5 and its area is 320 m^2. Find the height and base of the triangle.


9.A race track is in the form of a circular ring. The inner radius of the track is 56 m and the outer radius of the track is 63 m. Find the area of the race track.

10. A wire is in the shape of an isosceles triangle of two equal sides 16 cm and the unequal side 12 cm. The wire is bent into the shape of a circle. Find the area of the circle that is formed.

PLS SOLVE THESE QUESTIONS FAST



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Answer 1

Answer:

The area of ABCD is 38.5 cm^2

Step-by-step explanation:

Because AB is 6 cm and AB opposite side is CD = 5 cm

that is, opposite side are equal AB=CD=5cm

If we take the point where a symmetry line divides AB as P

the triangle formed is APD

PD=BC(opposite sides),7 cm

Line AP = AB-PB

=6-5 = 1 cm

Area of traingle APD is 1/2×1×7=3.5

Area of rectangle =l×b

=7×5=35

that is, the area of ABCD is area of rectangle+area of triangle=35+3.5=38.5

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