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Setler79 [48]
3 years ago
6

Which equation has the same unknown value as 405 ÷ 15 = ? A 405 × ? = 15 B ? ÷ 405 = 15 C 15 × ? = 405 D ? ÷15 = 405

Mathematics
2 answers:
Roman55 [17]3 years ago
5 0
Its C. 15 x ? = 405
The question is kind of like writing a fact family.
You need to find the same unknown number that belongs in the question mark in the rest of them.
So since 405 ÷ 15 = 27,
C. 15 x 27 = 405
? = 27
(It also needs to make sense :P)
fgiga [73]3 years ago
4 0
C bc you can multiply 15 by ? To get the same answer
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Asked on December 20, 2019 by

Ziya Vïvəķ

A cylindrical container with diameter of base 56cm contains sufficient water to submerge a rectangular solid of iron with dimensions (32×22cm×14cm). Find the rise in the level of water when the solid is completely submerged.

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ANSWER

Given,

Diameter of the base of the cylindrical container d=56 cm

Hence, radius of the base of the cylindrical container r=

2

56

=28 cm

Dimensions of rectangular solid is (32 cm×22 cm×14 cm)

We know that when a body is completely submerged in a container containing water,

the rise in the volume of water in the container is equal to the volume of the body.

Let, the water rises to a height h.

Hence,

Volume of water rises in cylindrical container =Volume of the rectangular solid

πr

2

h=32×22×14 cm

3

7

22

×(28)

2

×h=9856 cm

h=

22×784

9856×7

cm

h=4 cm

4 0
3 years ago
Read 2 more answers
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