Question

17. Reena has a book with the dimensions 10 cm x 5 cm x 3 cm. Find the volume of such
12 books

18. What is the radius of circle if its diameter is 9 cm?

plz tell me the answer of this 2 question.

plz fast​

Answer 1

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17)

volume of one book = 10 x 5 x 3 = 150cm³

volume of 12 such books = 12 x 150 = 1800cm³

18)

if diameter = 9cm

radius = diameter /2 = 9/2 = 4.5cm

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Answer 2

Answer:

1.1800

2.4.5 cm

Step-by-step explanation:

1) length=l=10cm

breadth=b= 5cm

height=h=3cm

volume of 1 book= l×b×h

=10×5×3

=150

volume of12 books = 12 × 150

=1800

2)diameter= 9cm

radius is always half of diameter

therefore, r=d/2

therefore,radius= 9/2 = 4.5cm