Q10) A book was sold for Rs. 550 with a profit of 10%. What was its cost price? *​

55

Step-by-step explanation:

550÷10 = 55 is t answer

so a parallelogram is just like a square base times height. multiply 40 and 39 to get 1560 inches.

a triangle is base times height divided by two. so multiply 7.9 and 5 and then divide it by 2 to get 19.75inches.

the kite can be split into two separate triangles and added together to get the total area. 30 x 4 /2 which equals 60. make sure to double it for the two triangles making 120.