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3 years ago

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

2 answers:

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=

=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

h=32×22×14 cm

×(28)

×h=9856 cm

22×784

9856×7

h=4 cm

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3 years ago

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