Question

1. Fill in the blanks
a. A ____________has a starting and an end point.
b. An obtuse angle measures _________ than 90 degrees and less than _________________
c. Sum of two right angles is a ____________________________
d. In a bar graph width of rectangle is always _________.
e. The tally mark represents ________.
2. Use T chart to give difference between parallel and perpendicular lines with example.
3. Measurements:
Convert the following as instructed
a. 1250 mm to hm
b. 48 hg to kg
c. 851.55 km to dam
4. The area of a rectangular fence is 500 square feet. If the width of the fence
is 20 feet, then find its length.
Here the area and the width of the rectangular fence are given. We have to find the
length of the fence.

Answer 1

1.

a. Line segment

b. greater, 180 degree

c. 180 degree

d. equal

e. counting

3.

a. 0.0125 hm

b. 4.8 kg

c. 85155 dam

4.

Here the area and the width of the rectangular fence are given. We have to find length of the fence.

The area A of a rectangle is given by the formula A= 1 w where l is the length and w is the width.

Given that area is 500 square feet and width is 20 feet.

Substituting values in formula,

⇒500= 1×20

⇒ 500/20 = 1×20/20 [ Dividing both sides by 20 ]

⇒1 = 25 feet

∴ length of rectangular fence is 25 feet.

Hence, the answer is 25.