Question

Q.5.(a) The sum of two rational numbers is 712. If one of them is –815, find the other.
(b)Find the smallest number by which 175 must be multiplied to make it a perfect square. Also,find the square root of the perfect square obtained.
(c)Three numbers are in the ratio 1 : 2 : 3. The sum of their cubes is 7776. Find the numbers.
(d)The dimensions of a cuboidal room are l= 10 m, b = 6 m and h = 4 m. Calculate the volume of the room and surface area of the walls.

Answer 1

Answer:

(a 1527

Step-by-step explanation:

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