what is the LCM of 4 and 13​

Step-by-step explanation:

Given that b=3h

Area=21×bh

Area=21×(3h)h

Area=21×3h2

Given that 

⇒58×21×3h2=783

⇒3h2=27

⇒h2=9

⇒h=300m

⇒b=900m

Step-by-step explanation:

(Use a graph paper for this question.) The daily pocket expenses of 200 students in a school are given below:

Pocket expenses (in Rs) 0−5 5−10 10−15 15−20 20−25 25−30 30−35 35−40

Number of students (frequency) 10 14 28 42 50 30 14 12

Draw a histogram representing the above distribution and estimate the mode from the graph.

Answer:

true

Explanation:

LPG used as domestic fuel chiefly contains Propane and Butane. LPG: LPG stands for Liquified Petroleum Gas. LPG is consumed as fuel gas in heating appliances, cooking equipment, and vehicles.

Explanation:

the diagram shows the structure of a carbon compound

Answer:

Carbon compounds can be explained as the chemical molecules or substances containing carbon.

Explanation:

• Catenation is the property of carbon compounds which can form very long chains of interconnected carbon-carbon bonds.
• carbon-carbon bonds are stable and strong enough.
• The hydrocarbons are the simplest form of organic molecules where hydrogen atoms get bonded to the carbon atoms chain.
• The backbone of hydrocarbons can be substituted by atoms of oxygen, nitrogen, sulfur etc which are known as heteroatoms.
• When we consider a stable carbon compound, the carbon atom which is tetravalent obeys the octet rule (carbon can make a maximum of four covalent bonds).

• carbon compounds can be categorized into two types -

        1. Saturated carbon compounds

        2. Unsaturated carbon compounds

• Carbon compounds can be in tree forms -

        1. Straight chains

        2. Branches

        3. Rings

• Some examples of carbon compounds are - methane, ethane, propane, butane, benzene, isopentane etc.

Answer:

all of them.

Explanation:

please mark me as brainliest.