Mensuration Test

Result

Mensuration Test - 4

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Weekly Quiz Competition

Question 1
1 / -0

How many times does the area of a square become if its side is doubled?

A
1/2 times the old one

B
4 times the old one

C
1/5 times the old one

D
8 times the old one

Solution

Let side = x, then area of the square = x²
If side is doubled;

New side of the square = 2x,
Then, new area of the square = 4x²

Hence, the area becomes 4 times after the side of the square is doubled.
Question 2
1 / -0

If the area of a rectangle is 64 cm², then which of the following can be the length and width of that rectangle?

A
Length = 7 cm and width = 8 cm

B
Length = 16 cm and width = 4 cm

C
Length = 31 cm and width = 2 cm

D
Length = 8 cm and width = 10 cm

Solution

Putting the values as follows:
Length = 16 cm
Width = 4 cm
Area of the rectangle = 16 × 4 = 64 cm²
Question 3
1 / -0

A glass sheet for a building measures 7 m 600 cm by 1 m 300 cm. Find the perimeter of the glass sheet.

A
17.8 m

B
21.2 m

C
28.9 m

D
30.9 m

Solution

Length of the glass sheet = 7.6 m
Width of the glass sheet = 1.3 m
Perimeter of the glass sheet = 2(l + w)
= 2(7.6 + 1.3)
= 2 × 8.9 = 17.8 m
Question 4
1 / -0

If the perimeter of an isosceles triangle with the unequal side measuring 5 cm is 37 cm, find the length of the other two sides.

A
17.5 cm

B
17 cm

C
16 cm

D
6 cm

Solution

An isosceles triangle is a triangle that has two sides of equal length.
37 - 5 = 32 cm
Length of the other two sides = 32 ÷ 2 = 16 cm